Malicious PDF — malware analysis report

Static analysis result for SHA-256 030e86c75b8d3ab5…

MALICIOUS

PDF

82.7 KB Created: 2021-10-04 21:16:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: d513572f782c3cc8d5681a1a3239bf63 SHA-1: 2a737aa02a2b805bcffb138593645f131f5ce539 SHA-256: 030e86c75b8d3ab59d837879ded317f9100652a9226b41e78f46d7fff5b2a83e
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external websites, many of which appear to be compromised or disposable hosting, suggesting a link farm designed to redirect users. The 'SE_CALLBACK_LURE' heuristic indicates the document's content is designed to prompt users to call a phone number, a common tactic in callback phishing or tech-support scams. Although no scripts were explicitly extracted, the presence of multiple external links and the callback lure heuristic strongly suggest malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9833

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://pixomot.ru/uplcv?utm_term=cu+yd+to+gallons PDF link annotation
    • http://morecoredesign.com/images/imageUps/files/sanipavasitem.pdfIn PDF document text
    • http://tonyprins.nl/images/uploads/file/vimeloxonemopabidaruxoto.pdfIn PDF document text
    • http://edins.net/userData/ebizro_board/file/43719399375.pdfIn PDF document text
    • https://dennismaloney.ca/upload/editor/file/solewabizevenek.pdfIn PDF document text
    • http://poddertradingandindustries.com/userfiles/file/zumiza.pdfIn PDF document text
    • http://sjhtractor.com/d/files/duvurakagujijebet.pdfIn PDF document text
    • http://www.jhannahs.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614f727ce5632---gutuwolosodufag.pdfIn PDF document text
    • http://neodev.space/wp-content/plugins/formcraft/file-upload/server/content/files/1614402b9391dd---53256683298.pdfIn PDF document text
    • http://watchimport.eu/userfiles/file/rarax.pdfIn PDF document text
    • http://telek-trans.hu/editor_up/54103868271.pdfIn PDF document text
    • http://lavalnerina.it/userfiles/file/bazisinijesatulixesak.pdfIn PDF document text
    • https://atlaskvartir.ua/data/uploads/files/60840628337.pdfIn PDF document text
    • https://plumcourse.com/wp-content/plugins/super-forms/uploads/php/files/9867bfb3b32e10700e27631247df0381/kakosiwirelaw.pdfIn PDF document text
    • http://evo-models.com/uploads/userfiles/files/9844426134.pdfIn PDF document text
    • http://mellorymotors.ru/admin/ckfinder/userfiles/files/somarotudavexigez.pdfIn PDF document text
    • http://gustosandvic.com/ckfinder/userfiles/files/11675878947.pdfIn PDF document text
    • http://marleenjansen.nl/images/uploadfiles/78626323426.pdfIn PDF document text
    • https://pavaniautismschools.com/wp-content/plugins/super-forms/uploads/php/files/1v3gvrq1klghsoahh8e2tjdscn/17757568305.pdfIn PDF document text
    • http://jamesandsons.ca/userfiles/file/47473415534.pdfIn PDF document text
    • https://spa-salon.ru/ckfinder/userfiles/files/48526516013.pdfIn PDF document text
    • https://hatinhjobs.com/upload/files/64332659660.pdfIn PDF document text
    • http://tipsclubcr.com/campannas/file/6541396894.pdfIn PDF document text
    • https://serka.com/serka/upload/files/47284488261.pdfIn PDF document text
    • https://soportedevida.mx/ckfinder/userfiles/files/loselikarobedenu.pdfIn PDF document text
    • http://reclameindex.nl/images/uploads/kazukadenepijid.pdfIn PDF document text
    • https://beaufortbond.com/wp-content/plugins/super-forms/uploads/php/files/4c7c26d4149077ecc96d789b5102ced3/tuxuvuferilaxuli.pdfIn PDF document text
    • http://asid.rw/userfiles/file/31680941792.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000deb9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEB9 18400 bytes
SHA-256: 602f4aa43f8ff2b8a43df5cccca4d4692275b1aaa139ec7d87663641fa291e16
font_01_sfnt_off00010dde.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DDE 10344 bytes
SHA-256: 3aa094a72e91f4240819716b9597bebeda27136aa33f04d0e936738398e77e33
font_02_sfnt_off00012537.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12537 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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