Malicious PDF — malware analysis report

Static analysis result for SHA-256 0fb079fae8d5a897…

MALICIOUS

PDF

84.6 KB Created: 2021-07-02 02:57:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 64868d94d4e2dc2a478a05a5ac37d8ba SHA-1: d5fe227fc9d7aeb57521ce4a4c29d6701f8311a5 SHA-256: 0fb079fae8d5a897876ece57989006e7c1c84c6ab9f1e153dfa144588aed70a7
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. The file contains a link farm pointing to numerous distinct hosts, many of which appear to be compromised WordPress sites or disposable hosting. These links likely serve as a lure to direct users to phishing sites or to download further malicious payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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 http://taskentcompany.com/userfiles/file/2393955412.pdf In PDF document text
    • https://fullhousetourism.com/UploadFiles/file/20210606051016171.pdfIn PDF document text
    • https://arerp.kr/data/file///66093813850.pdfIn PDF document text
    • https://fobiy.net/wp-content/plugins/super-forms/uploads/php/files/0b77382c570ec7002b0c2a37a18df095/jelowuxamovoteke.pdfIn PDF document text
    • https://www.straightmyteeth.com/wp-content/plugins/super-forms/uploads/php/files/33be19162803fa467073e15b5fcc1e79/65084134916.pdfIn PDF document text
    • https://precisionautoandac.com/wp-content/plugins/super-forms/uploads/php/files/6cea9d0c70d4ca0238c6e16c5d1925b1/26357175408.pdfIn PDF document text
    • https://earplighting.com/wp-content/plugins/super-forms/uploads/php/files/6d5866bb4b98b5a80eeaa65adc015ea3/gaviwogozamoxasotovume.pdfIn PDF document text
    • https://smoothnomad.com/wp-content/plugins/super-forms/uploads/php/files/q45j6bt8j6eq8bf9ejvsei5p6j/1201582559.pdfIn PDF document text
    • https://brusroom.com/wp-content/plugins/super-forms/uploads/php/files/9108574016ed542bf073ca3f2cfcdbad/getubapesito.pdfIn PDF document text
    • https://bistro-8.com/wp-content/plugins/super-forms/uploads/php/files/aeeef8756bd4a3bd3d606f8e5abc8a48/jikasuxisiwonugojid.pdfIn PDF document text
    • https://www.glasswindowequipment.com/wp-content/plugins/super-forms/uploads/php/files/a1788f9e97b742fabc2c053644a79943/96326589282.pdfIn PDF document text
    • https://certifiedmoversinc.com/wp-content/plugins/super-forms/uploads/php/files/b0b2cb11f492cdf1211f634d44a20050/deruzij.pdfIn PDF document text
    • http://vipavtoufa.ru/wp-content/plugins/super-forms/uploads/php/files/2f44f3172cdfca0130a97a716691da63/53114335061.pdfIn PDF document text
    • https://kuepancong.com/contents//files/95757937314.pdfIn PDF document text
    • https://kolodezrus.ru/wp-content/plugins/super-forms/uploads/php/files/255f00873747226f7fb901374c67959c/vegalewisavupiwab.pdfIn PDF document text
    • http://www.rkcomdesignservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/160883fe7ab823---xetevuworowuwog.pdfIn PDF document text
    • https://xn--80aaijzh9b.xn--90ae/documents/file/ragakaxutekujo.pdfIn PDF document text
    • https://relaxationplusmn.com/wp-content/plugins/super-forms/uploads/php/files/7ec8ee3b4aff805062cea48d60dfabb6/fibugipoma.pdfIn PDF document text
    • http://www.jimenez-casquet.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a880a595519---75845026795.pdfIn PDF document text
    • http://webatnet.de/ckfinder/userfiles/files/55341131629.pdfIn PDF document text
    • https://hoovermaids.com/wp-content/plugins/super-forms/uploads/php/files/e84ac0eb7259e4ec1cc276755f357894/zadazaneneg.pdfIn PDF document text
    • https://amenagementsoleil.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075f903cc274---lowejuxikumozosexenudu.pdfIn PDF document text
    • http://www.carolglassman.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ba5ff427e7d---38042539651.pdfIn PDF document text
    • https://tocgia247.com/wp-content/plugins/super-forms/uploads/php/files/qsbqkkig4d617122b7iuru4cfd/fomazigimukerumewufutefu.pdfIn PDF document text
    • https://beautifullifeuk.com/wp-content/plugins/super-forms/uploads/php/files/4917372a81722e17f4290994fe99310b/kigiwepepopikiwe.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/ngfLrbzwjls/uplcv?utm_term=recipe+for+boulevardierPDF link annotation
    • 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e586.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE586 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000fd9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD9D 10596 bytes
SHA-256: a13bca5727c60f569a6bbc71d868dd7cb20025282fcba728f4af065f1940b105
font_02_sfnt_off000115ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x115AB 18192 bytes
SHA-256: 479cca6be504c560fa9e3e5f40bb6c4a8a27acb051ea0fcab08b624e647e2433

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