Malicious PDF — malware analysis report

Static analysis result for SHA-256 96473afe4d67efcc…

MALICIOUS

PDF

83.4 KB Created: 2021-07-17 01:42:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 2cfa3066b9fa4e2dab1039085cc87268 SHA-1: f8671d4d522344a842e8c15c72049a14014dc04b SHA-256: 96473afe4d67efccf95e70f82e6ee2e2fd590c883d38e74dbd26c879ec1efb89
204 Risk Score

Malware Insights

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

The PDF contains embedded JavaScript and numerous external URIs, many of which point to compromised WordPress installations acting as link farms. The heuristic 'SE_ADVANCE_FEE_SCAM_LURE' strongly indicates the document's purpose is to trick users into fraudulent transactions. The embedded JavaScript likely facilitates the redirection or further exploitation, contributing to the overall malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

Heuristics 8

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://www.moteco.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160781c604021f---xolodozo.pdf
    • http://test.uebersetzungen-nesselberger.de/wp-content/plugins/formcraft/file-upload/server/content/files/1606eca95a52cd---fukikisati.pdf
    • http://bochosushi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160810553f306d---71086288065.pdf
    • http://www.primalegal.eu/wp-content/plugins/super-forms/uploads/php/files/pkfoeoeeocte7pfk6v1vkkjd92/31974899017.pdf
    • https://honda-otolongan.com/upload/files/jokiripolawinubufinaditap.pdf
    • https://haltia.mx/sii/ckfinder/userfiles/files/wawelap.pdf
    • https://aashianarealty.com/file/jevilok.pdf
    • http://pvsystexperts.com/wp-content/plugins/super-forms/uploads/php/files/rkqq95660nuqfcnk425e2epsk2/79465958668.pdf
    • http://daehwa.info/uploaded/file/2290986379.pdf
    • https://mindweave.co.uk/wp-content/plugins/super-forms/uploads/php/files/gtu2hr17r3bdlkmacm9g1gfqfi/liwun.pdf
    • https://www.siemers-deutschmann.de/wp-content/plugins/super-forms/uploads/php/files/e2ktn6bg9ca8j718uvv179i46a/nuguw.pdf
    • https://www.numberoneporthill.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1607bba51de204---50477853767.pdf
    • http://www.carolglassman.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b0fec2eca57---mijamepipo.pdf
    • https://mgc.to/sites//web/upload/files/96926170739.pdf
    • http://mhinflatable.com/upload/file/sajugevinadesofobe.pdf
    • https://carpanea.it/wp-content/plugins/super-forms/uploads/php/files/6bbde267f567a777b8f34c5b61e102d3/rirunamutujudokev.pdf
    • http://www.cheapmotorcycleinsurancepa.com/wp-content/plugins/super-forms/uploads/php/files/32s3sbtmppo6fu0o30dj0as154/zajetazololajozofiwa.pdf
    • https://cualuoihoanmy.com/uploads/userfiles/file/75214411345.pdf
    • http://webdulich.com/js/ckfinder/userfiles/files/gagawagofopemupegewuzawe.pdf
    • http://fautographie.org/images/userfiles/files/22105553760.pdf
    • https://imagebeaute.fr/userfiles/file/26147647494.pdf
    • http://erkerlaender.de/wp-content/plugins/formcraft/file-upload/server/content/files/160be69e02cd52---sozova.pdf
    • http://viettelhaiphong.me/data/dulieu/files/ronavexabosot.pdf
    • http://sts-logistika.ru/wp-content/plugins/super-forms/uploads/php/files/77157cadb0ad863b1cd6d9393395fc75/92894129237.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/1KS0DP0cxss/uplcv?utm_term=how+is+a+clock+made
    • 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_off0000e4f5.bin
82dba1128dab1175a158b1b9ca148a151d2f4ae5562c8809669e28662b0b31d1
pdf-font-stream PDF embedded font (sfnt) at offset 0xE4F5 16976 bytes
font_01_sfnt_off000110d5.bin
d5944b151579e4f5e05a141c9c438d886dbfa672db5448f463b80805fb151d2b
pdf-font-stream PDF embedded font (sfnt) at offset 0x110D5 10400 bytes
font_02_sfnt_off0001286e.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x1286E 16792 bytes