Malicious PDF — malware analysis report

Static analysis result for SHA-256 092c373b3bb1b615…

MALICIOUS

PDF

86.8 KB Created: 2021-09-20 02:12:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 4736ee0aa7c1c8e1a6e615e3dbe63316 SHA-1: 605cb429d7c4e3cb19dfb2487b7b36b98e91cd90 SHA-256: 092c373b3bb1b615d08093034b1c0d1bb16d8fb21095c6c6f7e32bdda3dc72a7
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document is identified as malicious by ML classifiers and ClamAV, and exhibits characteristics of an advance-fee scam. It contains numerous links, many pointing to compromised CMS upload storage or disposable hosting, suggesting a tactic to distribute fraudulent content or redirect victims. The document's structure and content align with common phishing lures for lottery or parcel scams.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9912

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://nadrozmerne-sklo.cz/uploads/dejemesirigife.pdf
    • http://bagliodeimille.it/userfiles/files/bilomuw.pdf
    • http://gospel-pour-100-voix.com/fichiers/newsletter/file/biwaf.pdf
    • https://h1t-urlaurora1-turbo.com/contents/files/nivejabifapav.pdf
    • https://austarpharma.austarchina.com/upload/files/33787284499.pdf
    • http://solarwindependence.com/ckfinder/userfiles/files/29401656.pdf
    • https://inprovitecuador.com/ckfinder/userfiles/files/79704116740.pdf
    • https://kibledergisi.net/resimler/files/93314227439.pdf
    • http://kenshopvn.com/uploads/files/duvagofeluxolejizobidiwav.pdf
    • https://nbc.com.vn/ckfinder/userfiles/files/xavexopuwefizewoma.pdf
    • https://portalbime.com/UploadedFiles/New/file/91335933112.pdf
    • https://petpetmates.com/files/editor/file/72501664230.pdf
    • https://lamaisonducoeur.ca/upload/editor/file/fabupidobebifugopat.pdf
    • http://stopasbestos.ca/wp-content/plugins/formcraft/file-upload/server/content/files/161348d6a4921f---31721539129.pdf
    • http://www.kissdocs.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1613eca0206b60---82579412776.pdf
    • https://n-tlg.com/files/file/68245257543.pdf
    • https://www.yoursurveysurveyors.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16133fd7bc2fc8---5194375597.pdf
    • http://atel-j.nl/uploads/files/gutaberolitab.pdf
    • http://noticiascgnews.com.br/ckfinder/userfiles/files/23747730796.pdf
    • http://webs123.com/userfiles/file/49285474614.pdf
    • https://arendic.cl/files/datulonunadazibov.pdf
    • http://umffz21.ru/admin/ckfinder/userfiles/files/75112282454.pdf
    • http://smartcookieacademy.com/wp-content/plugins/formcraft/file-upload/server/content/files/161409b3637eb6---86266470522.pdf
    • https://kvzriu.org/images/file/3069603611.pdf
    • http://diagonal.org.ar/wp-content/plugins/formcraft/file-upload/server/content/files/1613fc8661709f---93266681216.pdf
    • https://allcondosales.rodeodrivecondosale.com/userfiles/files/72631303046.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/cv9VXjIrmdE/uplcv?utm_term=how+to+flash+android+phone+using+power+button
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ecfa.bin
16fa51c9d392a397cfb014a50b6e7108abc03b12abd4523dc04442d8b8d06a96
pdf-font-stream PDF embedded font (sfnt) at offset 0xECFA 11096 bytes
font_01_sfnt_off00010657.bin
6091145467f1632653bcfb354d8f6d782f2276148ff70c785c88c8bf52b980f7
pdf-font-stream PDF embedded font (sfnt) at offset 0x10657 17768 bytes
font_02_sfnt_off000134a1.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x134A1 16792 bytes