Malicious PDF — malware analysis report

Static analysis result for SHA-256 12eb2081c4d93f07…

MALICIOUS

PDF

94.4 KB Created: 2021-08-10 00:43:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: a6569debdd913a9c5355951a6371eeeb SHA-1: ac6c0a7b1adc169b1d7b9e5068272b4e7dbfc177 SHA-256: 12eb2081c4d93f07e551e46bfce02e499a831eda4ac9a1c3d89d3b5985770a35
196 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, and heuristics indicate it is an advance-fee scam lure. It contains numerous links to potentially compromised WordPress sites and other disposable hosting, suggesting an attempt to redirect users to malicious content or phishing pages. No scripts were extracted, but the overall structure points to a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

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 http://guides2alpes.fr/uploads/file/33764403708.pdf
    • http://dichvugiayphep.biz/upload/ck/files/wewurugu.pdf
    • https://ukdirectremovals.com/wp-content/plugins/super-forms/uploads/php/files/40a5de228e6f32e0d278838e78520456/87269085375.pdf
    • http://centromp.it/userfiles/files/51596009179.pdf
    • http://ampletrekking.com/userfiles/file/93411098867.pdf
    • https://htfcompact.com/wp-content/plugins/super-forms/uploads/php/files/eb5c2c3696fac4f43c0e789c0e2a9607/72358377757.pdf
    • http://theopenhouseclub.com/wp-content/plugins/super-forms/uploads/php/files/8ec953f4956d0416c26d40e7ae8d1d43/88991059873.pdf
    • https://realestateconnect.biz/wp-content/plugins/super-forms/uploads/php/files/ma8qjpf7emf4daobtsvn4hbjh1/vovevuduxunapuzisobumora.pdf
    • http://www.photobreak.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16080a4b8bd792---41939984278.pdf
    • https://humantouchtranslations.com/wp-content/plugins/formcraft/file-upload/server/content/files/1/1606f2a908fac1---29959077208.pdf
    • http://location-appartement-venise.com/italie_documents/files/17030710190.pdf
    • http://sumosushingrill.com/uploads/files/16893374551.pdf
    • http://akkoryazilim.com/userfiles/file/lonifuwaxoxilonolupeb.pdf
    • http://zajazd-broadway.pl/galeria/file/tanapilo.pdf
    • https://ecoretras.com/file/xofugupumaniwonuluva.pdf
    • https://ckmusicdesign.nl/userfiles/file/fegasavuwijalo.pdf
    • http://purofirstli.com/userfiles/files/lasezugonoguma.pdf
    • http://jjkxmy.com/upload/files/202106211036499521.pdf
    • http://becro-plast.hr/wp-content/plugins/formcraft/file-upload/server/content/files/1607186f14d334---73259087612.pdf
    • https://jungleflightchiangmai.com/Uploads/files/38756233830.pdf
    • http://palami.by/images/file/56570679412.pdf
    • https://drmiamiconnect.com/wp-content/plugins/super-forms/uploads/php/files/905a9e1af99997f7be14272e8c8ee49c/82323831138.pdf
    • https://metroguards.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160a64dc1d2590---92980577836.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/YTWXjIUwRh0/uplcv?utm_term=how+to+sync+a+universal+rca+remote
    • 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_off00010d64.bin
c2d7a9321821a80ce4c0c40b2c6a45677b60009e8a58ba0b314b151f3160aeac
pdf-font-stream PDF embedded font (sfnt) at offset 0x10D64 10748 bytes
font_01_sfnt_off0001262d.bin
82cf14616a94ad9bd075aa8d9823adcbafd6d37a58efd2787262470a3844f5e7
pdf-font-stream PDF embedded font (sfnt) at offset 0x1262D 17292 bytes
font_02_sfnt_off0001534f.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x1534F 16792 bytes