Malicious PDF — malware analysis report

Static analysis result for SHA-256 02e17200ec79e92b…

MALICIOUS

PDF

80.4 KB Created: 2021-08-13 12:24:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 6feed56d68d38a0b2a9ae4af4acd2677 SHA-1: cad12494f059e10a1e4ca14dfb92dc85a8f1763b SHA-256: 02e17200ec79e92bbcc22779287cf2df2844db5c67dc6be9d3a4d66875ab54b0
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. Heuristics indicate it functions as a link farm, with multiple URLs pointing to compromised WordPress sites and disposable hosting. While no scripts were directly extracted, the nature of the link farm suggests an attempt to redirect users to malicious sites, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://myparrotfood.com/user_files/files/68608343062.pdf In PDF document text
    • http://mikailang.net/userfiles/file/20210510032406_1094486934.pdfIn PDF document text
    • http://likebarcode.com/image/files/20210707_084422.pdfIn PDF document text
    • https://messianic.live/wp-content/plugins/super-forms/uploads/php/files/df39376b27c95046b40a4e9a6289379a/66916247720.pdfIn PDF document text
    • http://saothienemb.com/uploads/images/files/fevuxogowazokoriv.pdfIn PDF document text
    • http://chagatea.ru/wp-content/plugins/super-forms/uploads/php/files/f56652ef007cd572c41e20aec8e07425/94743557181.pdfIn PDF document text
    • http://suchanekstomatolog.pl/files/file/3934487502.pdfIn PDF document text
    • https://www.lang-mayer.de/wp-content/plugins/formcraft/file-upload/server/content/files/160b0db6751288---wujoxaw.pdfIn PDF document text
    • http://trackeg.com/en/wp-content/plugins/formcraft/file-upload/server/content/files/1606cc59f1f31b---76938493155.pdfIn PDF document text
    • https://chiataiec.com/userfiles/Proj_Name//files/pipofafogoreri.pdfIn PDF document text
    • http://kondicionery-dolgoprudny.ru/upload_picture/file/lugekosupepa.pdfIn PDF document text
    • http://urbanconstructions.org/images/uploadedimages/file/gemogamebawitexunezeti.pdfIn PDF document text
    • http://lulanjina.net/upload/files/89095059434.pdfIn PDF document text
    • https://glasschneider.koeln/wp-content/plugins/super-forms/uploads/php/files/o2e9q2bek14g6gp1bfsqs59n8o/tomufofawadevujupamak.pdfIn PDF document text
    • http://3qlohas.com/CKEdit/upload/files/sulabudi.pdfIn PDF document text
    • http://eko-inwest.eu/upload/file/1879468303.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609b7650d703d---48215334921.pdfIn PDF document text
    • http://eduomania.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609995e97ce55---73904739408.pdfIn PDF document text
    • https://daulte.com/ckfinder/userfiles/files/loxakov.pdfIn PDF document text
    • http://jjinline.org/file_upload/file/67727302563.pdfIn PDF document text
    • http://kaplanpm.com/wp-content/plugins/formcraft/file-upload/server/content/files/160726e8a3d144---8976444498.pdfIn PDF document text
    • http://gowowdeli.com/uploads/files/4860603961.pdfIn PDF document text
    • http://adaviestransportltd.com/userfiles/file/fozuwano.pdfIn PDF document text
    • https://xn--faade-mtal-p6a3a.ch/ckfinder/userfiles/files/tenezi.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/3vuEKuznOb8/uplcv?utm_term=dactyl+publishing+english+answersPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d938.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD938 10972 bytes
SHA-256: 892686ed5c67818ac29bc65ac2a08674d1d382ba6f9e765f8e8d5206d4468a57
font_01_sfnt_off0000f293.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF293 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00010aa5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10AA5 18024 bytes
SHA-256: f8c83a1e32cde5f6bf9bbf051af30729b4eb4d74010c351f451d1b4189290a25