Malicious PDF — malware analysis report

Static analysis result for SHA-256 34d179b6bfb3e16f…

MALICIOUS

PDF

90.3 KB Created: 2021-08-08 06:00:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: f45047998e16a093ec4d25530d0c979b SHA-1: bf2a0b2f6a696159f1f87563394a4269a721eff5 SHA-256: 34d179b6bfb3e16f6afd0fa0d56c416ab348fcb6a4cf62449d676cd5ed45ba31
276 Risk Score

Malware Insights

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

This PDF document is classified as malicious and exhibits characteristics of an advance-fee scam, potentially involving lottery winnings or parcel deliveries. It also contains lures for MFA harvesting and callback phishing, suggesting a multi-faceted social engineering approach. The numerous embedded URLs pointing to compromised WordPress sites and disposable hosting indicate a broad phishing infrastructure designed to redirect victims to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9954

Heuristics 10

  • 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.
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • 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
  • 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://krisoc.ru/uplcv?utm_term=green+dot+moneypak+activation+code+generator+v1.4+download
    • https://cutletsmeat.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609ed3076ded9---jubevavilewirewik.pdf
    • https://christianboudreau.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f0122c199cf---6181960986.pdf
    • http://abogarestudio.com/userfiles/file/poxitaraxadezasajenelon.pdf
    • https://abeess.com/userfiles/file/77762399859.pdf
    • https://www.fecomerciomg.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/16084440c91458---seradavasorovuwomexapaf.pdf
    • https://anakmeong.com/contents//files/xojuxazilaw.pdf
    • https://iamluno.com/wp-content/plugins/formcraft/file-upload/server/content/files/160fa0353c3b32---navigobo.pdf
    • http://ahlhy.com/uploads/file/161243182093.pdf
    • http://jamoncup.es/wp-content/plugins/formcraft/file-upload/server/content/files/160e532498d380---soxarobakuk.pdf
    • http://ansonseatery.com/uploads/files/81520154576.pdf
    • https://zazilha.com.mx/wp-content/plugins/super-forms/uploads/php/files/fa34965c3c9a17fef5d40c15f03befc0/liwurevenikota.pdf
    • https://rmissio.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1606e20d508be2---budinaluzid.pdf
    • http://aranykoronakft.hu/userfiles/file/bonazivubosob.pdf
    • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608e4b16b5a44---94828645600.pdf
    • http://nhaphangmy.us/upload/files/9870090451.pdf
    • http://sklepjola.pl/userfiles/file/11612166162.pdf
    • http://nguoigiupviec99.com/webroot/img/files/61776751988.pdf
    • http://www.gainerwindows.ca/wp-content/plugins/super-forms/uploads/php/files/f7fnuc0fh2oc6ms5ujjj6gk513/13061485358.pdf
    • https://christianboudreau.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ba6787ee0ab---dokapelopivugitiw.pdf
    • http://waterlootour.com/FileData/ckfinder/files/20210725_FEFA25CC75B69DF9.pdf
    • https://happycustomerservice.com/wp-content/plugins/super-forms/uploads/php/files/ee5af2e83f965093b17a5ff92f9481a3/ziwujaragironolobas.pdf
    • http://pijntherapie.be/uploads/files/xefabebutomaxawuteladof.pdf
    • http://puzynowska-kancelaria.com/userfiles/file/balirobatovuxa.pdf
    • http://werkkledingverkoop.nl/images/docman/files/kikipinolonakitezowuxonox.pdf
    • https://www.helmmsp.ca/wp-content/plugins/super-forms/uploads/php/files/555cda9ed0e71dc1759e156afe884e12/woxubokikewoxil.pdf
    • https://creationstationdance.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607fc44802a30---nidawer.pdf
    • 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_off0000e958.bin
08e72bfd7d20f19f8450a3c9875580a97b8ad8e67e2afcbce032c930b3cc5d64		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE958 24552 bytes
font_01_sfnt_off00012812.bin
db7d297cd1ee58d58f98e50da2165a758478d0b511324a9aa1d5c4b034259322		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12812 11280 bytes
font_02_sfnt_off0001427c.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1427C 16792 bytes

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