Malicious PDF — malware analysis report

Static analysis result for SHA-256 eaff83ff141717fd…

MALICIOUS

PDF

87.4 KB Created: 2021-06-26 17:50:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 619ae157429deeb7e003a7242690fb1f SHA-1: 9f34dd4e851ea3dfe1e3707653d81407e270db63 SHA-256: eaff83ff141717fda1e8ff12bfe231e638c5e90129322d0e7bd2d7b3480a57cf
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 to external websites, many of which are hosted on compromised CMS platforms or disposable domains, suggesting an attempt to distribute malicious content or phish for information. The document's structure and heuristic firings strongly indicate a lure for a lottery or parcel delivery scam.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

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://www.budgetskemaet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/160a8309822a1b---dujogodutudawudul.pdf
    • http://tragadsonisurat.com/ckfinder/userfiles/files/68481597285.pdf
    • https://okinawa4d.com/contents//files/wiwozije.pdf
    • http://rolmech-strzelno.pl/Upload/file/48265270332.pdf
    • https://noukos.gr/wp-content/plugins/formcraft/file-upload/server/content/files/16083249aa8be1---gunonap.pdf
    • https://www.northernillumination.com/wp-content/plugins/super-forms/uploads/php/files/af344ca45ddaeba07d122d10dfbcd7f7/61581985469.pdf
    • http://pocatellocampfire.com/wp-content/plugins/super-forms/uploads/php/files/qavjoake1tjqd1st9h222k2133/duwesisofikomujudup.pdf
    • https://seataclighting.com/wp-content/plugins/super-forms/uploads/php/files/2119a48b0806ab4d6c52cea6caf5c981/daweli.pdf
    • https://wecafephuket.com/wp-content/plugins/super-forms/uploads/php/files/a4s75p7g57bv21s4ii05l7ic0l/lugigefulesakuwijerizal.pdf
    • http://inewbus.com/wp-content/plugins/super-forms/uploads/php/files/pu1fp60v9l7dfmm86dc2f8so46/waberabuwurulebobamaruve.pdf
    • http://m2mus.ca/clients/b/b1/b1ca46fdb12d68e762e4a8b3318caec0/File/rewemojelomovejedulu.pdf
    • https://lokmangal.co.in/wp-content/plugins/super-forms/uploads/php/files/323bd5d34fc44539b2af1ef7c3632dc3/xuxebuzi.pdf
    • https://worldkelo.com/wp-content/plugins/super-forms/uploads/php/files/f56856c37399b8318a66f99aa32e4290/41727620428.pdf
    • http://www.hgbehringer.de/img/files/files/puxugilexenuxizituju.pdf
    • http://www.kreasoft.mx/wp-content/plugins/formcraft/file-upload/server/content/files/160b33b1ca15f5---jimalemijexatedilobibe.pdf
    • https://ethiquedevelopers.com/wp-content/plugins/super-forms/uploads/php/files/0aec42447f67fc515a601c3447caadbf/jukego.pdf
    • https://www.fifatravels.com/wp-content/plugins/formcraft/file-upload/server/content/files/160940fd78c4e1---12240672303.pdf
    • http://prodesign31.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16078a97d6927f---59207916697.pdf
    • https://prikolnaya.com/wp-content/plugins/super-forms/uploads/php/files/04d86348af90e03c652208a323fa1c09/dolonoxufodutep.pdf
    • https://terminarz.online/kosmetyczka/krakow/files/88685273422.pdf
    • https://diversifiedhumansolutions.com/wp-content/plugins/super-forms/uploads/php/files/d9aee545d0324db7eea129f653b8a035/xojiluzorakamasigufokoj.pdf
    • https://beaszemin.com/files/460339259.pdf
    • https://brusroom.com/wp-content/plugins/super-forms/uploads/php/files/8fba9183b28fa506c2003c6ae2ce0239/mezetezer.pdf
    • http://aliancegroup.su/wp-content/plugins/formcraft/file-upload/server/content/files/1606cb466b4365---12271303653.pdf
    • http://goldenpeak.it/userfiles/files/67329348999.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/PmAiG5ZyT-k/uplcv?utm_term=introduction+to+highway+engineering+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_off0000f15c.bin
c0dc01d5c7e2675ac9465a7b20478f84fc278f82ee237de6eae92a7401f0abfd
pdf-font-stream PDF embedded font (sfnt) at offset 0xF15C 17364 bytes
font_01_sfnt_off00011e87.bin
c3c36be62b439de2a4ae8522edfb6bbc889b0a0ad66f891d39f69a06e9a76045
pdf-font-stream PDF embedded font (sfnt) at offset 0x11E87 10936 bytes
font_02_sfnt_off000137b1.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x137B1 16792 bytes