Malicious PDF — malware analysis report

Static analysis result for SHA-256 0267b53cbf210ea6…

MALICIOUS

PDF

75.4 KB Created: 2020-11-14 20:09:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 170fb1f90aeabe57cf1d1642ba70626f SHA-1: df7abf1fd4ee2332d88fb8b551d0e5211cebe20d SHA-256: 0267b53cbf210ea6840e67d65e23b8bed3ca66d24250f06f8f272af45252d4a3
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://traffking.ru/strik?utm_term=kambi+kathakal+pdf+2015 PDF link annotation
    • https://zesopupejilit.weebly.com/uploads/1/3/0/7/130738861/kimovutigasezu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416661/normal_5fa2f7060bfc2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460461/normal_5fadd52bdc832.pdfIn PDF document text
    • https://gozexorajive.weebly.com/uploads/1/3/4/6/134610068/watafawamu.pdfIn PDF document text
    • https://kubupukadumu.weebly.com/uploads/1/3/1/3/131382740/lasitoxajazug.pdfIn PDF document text
    • https://doriruvoni.weebly.com/uploads/1/3/4/5/134585963/2707393.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465396/normal_5fadc61537c83.pdfIn PDF document text
    • https://melesosinipedo.weebly.com/uploads/1/3/4/4/134475371/toxol_dugujenuxomuwe_pilufavonesiz_mowozubig.pdfIn PDF document text
    • https://rulafusojuxibaw.weebly.com/uploads/1/3/4/2/134265871/nosaz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4428342/normal_5f99d88c2caa4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378171/normal_5f8fbc9a520d9.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/1c446268-d9bf-4696-97ea-f56f47c38f90/romusuromotafubamolifen.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • 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_off0000cf21.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF21 5628 bytes
SHA-256: 12d4c5db24902a9893a571ec57a8ca7cf5c92e0a3dbf5c2a5d850da3d328fbbd
font_01_sfnt_off0000e223.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE223 13064 bytes
SHA-256: 711082b3fcbf0214e41dbd72bb159963d36bd0856b86bdc55d165f41312fa39f
font_02_sfnt_off00010c02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C02 16140 bytes
SHA-256: 5bfda07072dd2e1b0df7f1680a75ba616774ec51e1a09c257f000ba239241e1c

Open this report in the interactive analyzer, or submit your own file for analysis.