Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff10199d36f85463…

MALICIOUS

PDF

194.0 KB Created: 2021-06-28 09:21:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13
MD5: a5508d89eac6fb1a5a00845120547ca3 SHA-1: 45245c85b7a3bb74dff1332c8ec14f5062f768f1 SHA-256: ff10199d36f854639d62ffdbbe1c1f5bdce9504afb63ba2a0ce13c8cc2c6c05a
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous links, many pointing to compromised WordPress sites and disposable hosting, suggesting a link farm designed to redirect users. The heuristic 'SE_ADVANCE_FEE_SCAM_LURE' strongly indicates the document's purpose is to trick users into believing they have won a prize or are due a large sum of money, requiring them to pay a fee or provide information. ClamAV also detected this as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9367

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://crysiq.ru/uplcv?utm_term=wii+sports+club+iso PDF link annotation
    • http://travelci.ru/ckfinder/userfiles/files/weraxekofebubetafuxo.pdfIn PDF document text
    • https://www.advids.co/wp-content/plugins/formcraft/file-upload/server/content/files/16083a392e9da9---77747767759.pdfIn PDF document text
    • http://shinserviceodi.ru/wp-content/plugins/super-forms/uploads/php/files/3d1982926a28a5eee00c722d8f3919c9/kitelitavazexixumuwo.pdfIn PDF document text
    • http://74ahs.com/clients/2/2a/2a132ee8da0778863662fd4b1fa251ed/File/xigezunovudinatew.pdfIn PDF document text
    • http://www.sunaryem.com.tr/wp-content/plugins/super-forms/uploads/php/files/o4neos7sjgaq1rgenmrmtn4oa6/xeluwafagegomafaxodev.pdfIn PDF document text
    • http://projectbudapest.hu/wp-content/plugins/formcraft/file-upload/server/content/files/1606d14fdcede2---fitafarixifa.pdfIn PDF document text
    • https://securitydm.com/slicice/file/28155609533.pdfIn PDF document text
    • http://xn--b1agjlwjc3g.xn--p1ai/ckfinder/userfiles/files/9037697676.pdfIn PDF document text
    • https://bilalyapidekorasyon.com/userfiles/file/zodib.pdfIn PDF document text
    • http://sl-light.ru/design/img/upload/file/nifalorokuvu.pdfIn PDF document text
    • http://brodart01.com/wp-content/plugins/super-forms/uploads/php/files/06j3eclg56u1hb8lk4vn9lr4k7/37011958679.pdfIn PDF document text
    • http://www.gainerwindows.ca/wp-content/plugins/super-forms/uploads/php/files/h7h7fp9tb60gevvf4lc55hr8g2/58209136307.pdfIn PDF document text
    • https://kvkumariajnkvv.org/singhania/downloads/file/22901411357.pdfIn PDF document text
    • https://www.olympusnorge.no/wp-content/plugins/super-forms/uploads/php/files/rlll9k8ghd6jqbvtett008sg28/56353181264.pdfIn PDF document text
    • http://www.thediethub.in/wp-content/plugins/formcraft/file-upload/server/content/files/160c4cc7c5832a---18280403430.pdfIn PDF document text
    • https://ailani.org/wp-content/plugins/super-forms/uploads/php/files/7e5d580d8049219981b6d3e5f674d961/damevigasobemep.pdfIn PDF document text
    • https://netpage.info/userfiles/file/vufesu.pdfIn PDF document text
    • https://calldidocta.com/wp-content/plugins/super-forms/uploads/php/files/e63e593f1b9a51d8e0d4932572dc4dfd/redawotafimuduwa.pdfIn PDF document text
    • http://imagespa.mx/wp-content/plugins/formcraft/file-upload/server/content/files/160801da4e9e01---6535368290.pdfIn PDF document text
    • http://verkoop-je-wagen.be/wp-content/plugins/formcraft/file-upload/server/content/files/1608298647df70---91442089097.pdfIn PDF document text
    • http://www.kliningstroy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160c288aa913a5---muwobig.pdfIn PDF document text
    • http://zadonskiy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160b3dc5d27cb3---86702153267.pdfIn PDF document text
    • https://kitapkapla.com/upload/ckfinder/files/nobutire.pdfIn PDF document text
    • https://transport-vehicules.fr/userfiles/file/44994679972.pdfIn PDF document text
    • https://www.marthatrotts.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1607573a6bd85b---femisomuxejawiparu.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002666b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2666B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00027e82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x27E82 10200 bytes
SHA-256: 3d441279db85108ec87d562f1dfee912e1b7410bf0a4ee4e6a4ee783f49ab07a
font_02_sfnt_off00029544.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x29544 16216 bytes
SHA-256: 8c2e9d80d580d08964a5048de7b59c27befd741f1c379efd0abbd599686b3e88
font_03_sfnt_off0002aae8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2AAE8 6380 bytes
SHA-256: 6c81562ae7143a6ff73741cd70e4630a9545ebe972e6cd4e6d3138e0a3fd5793
font_04_sfnt_off0002c1af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2C1AF 21968 bytes
SHA-256: 24010447fe2e3260f964815a7c8ab7217604a75c025c75f98f7bcfb82d2b15e1

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