Malicious PDF — malware analysis report

Static analysis result for SHA-256 edea0f0ed443cbdf…

MALICIOUS

PDF

74.6 KB Created: 2021-09-11 14:14:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 74a00a36b6033b9443c0fa2f5a4c8b65 SHA-1: 1456a9b475cea6779180f84a66683ac29224bcc5 SHA-256: edea0f0ed443cbdf5f8a65dfd775aff48601f876b0ddbba1d39c627e35bb7e29
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external websites, many of which are hosted on compromised CMS platforms or disposable domains, indicating a link farm designed for phishing. The ML classifier and ClamAV detection strongly suggest malicious intent. Although no scripts were directly extracted, the structure and URL patterns are consistent with a phishing lure that likely redirects to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9976

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
  • 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.
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • 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://archetipoingegneria.it/userfiles/files/zedazozun.pdf In PDF document text
    • https://relaxbotanika.cz/ckfinder/userfiles/files/pusibokunedoxexodonu.pdfIn PDF document text
    • http://tcihk.com/userfiles/29043232671.pdfIn PDF document text
    • http://hometextiles-consultant.com/ckfinder/userfiles/files/37294348463.pdfIn PDF document text
    • http://tk-weld.com/images/library/File/selefokiriwesogimoxoni.pdfIn PDF document text
    • http://barrybusiness-crm.com/ressource/devis-photo/files/42415121935.pdfIn PDF document text
    • https://backcountryplayground.com/wp-content/plugins/super-forms/uploads/php/files/098a0dbf1c0c5a589843a9240dd5f52c/80667996839.pdfIn PDF document text
    • http://wellnesszeewolde.nl/site/data/ws/files/59835910272.pdfIn PDF document text
    • https://www.jahnigterbraak.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1613029f89766d---niduronuzaf.pdfIn PDF document text
    • https://lenaoyunlar.net/calisma2/files/uploads/nixeravaj.pdfIn PDF document text
    • http://bimbrlata.cz/UserFiles/File/35848065821.pdfIn PDF document text
    • https://jamiatulbanat.in/wp-content/plugins/formcraft/file-upload/server/content/files/1613bfc779ccf5---bopupoto.pdfIn PDF document text
    • https://sambelteri.com/contents/files/tovemoninotu.pdfIn PDF document text
    • http://art-ball.net/files/file/10450020160.pdfIn PDF document text
    • https://artsketch.ru/wp-content/plugins/super-forms/uploads/php/files/51acb40f7bfe27f79fe69a7b2c9ebbd9/66694427437.pdfIn PDF document text
    • http://jtour.vn/userfiles/file/mifogakuzikej.pdfIn PDF document text
    • https://ls-machinery.com/uploadpic/files/202109011812351312.pdfIn PDF document text
    • http://dentalclinicbangalore.com/uploads/55584781277.pdfIn PDF document text
    • http://ajk-opakowania.eu/upload/fck/file/lawelovesenenugudimoru.pdfIn PDF document text
    • https://uleshuzatabc.hu/files/file/31607004898.pdfIn PDF document text
    • http://stellarp.com/userfiles/files/35706345447.pdfIn PDF document text
    • http://studioingegneramato.com/userfiles/files/wamitanukitaponivonivox.pdfIn PDF document text
    • https://musikkursus.dk/userfiles/file/92929982128.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/3vuEKuznOb8/uplcv?utm_term=redmi+note+9+scan+qr+codePDF 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_off0000c757.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC757 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000df6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF6E 10844 bytes
SHA-256: 6d135a22927b4e9049ef707ba85549d611960685c1b780ac5a9f5f5de4574336
font_02_sfnt_off0000f845.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF845 14504 bytes
SHA-256: f1d6f0c7364c2de7c7d3ef0b47c452af674fec38b72bb0d93c0a8516c514a96b

Open this report in the interactive analyzer, or submit your own file for analysis.