Malicious PDF — malware analysis report

Static analysis result for SHA-256 60c6080d64a5a96d…

MALICIOUS

PDF

75.6 KB Created: 2021-05-20 09:08:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 29cd7a73e1a1935dcbb85ecdb5074033 SHA-1: afede406be1da1cae22ab078716a11ccd6a92976 SHA-256: 60c6080d64a5a96db258b87dc87ce21778262ed23228aaaba113494770fe3d44
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous external links, with a significant number pointing to Weebly-hosted PDFs, indicative of a link farm or phishing campaign. The ClamAV detection and ML classifier strongly suggest malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to potentially malicious sites, likely for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://nipisod.ru/strik?utm_term=star+wars+d6+pdf
    • https://regajuwanuduxis.weebly.com/uploads/1/3/4/3/134319991/6844a.pdf
    • https://dotofinadi.weebly.com/uploads/1/3/0/7/130740455/4487346.pdf
    • https://jimedugevebuz.weebly.com/uploads/1/3/4/4/134437071/9668238.pdf
    • https://dodafuwunolig.weebly.com/uploads/1/3/4/0/134016835/06b6622d083e7.pdf
    • https://static.s123-cdn-static.com/uploads/4425504/normal_6006104f13e56.pdf
    • https://xidoteruredogon.weebly.com/uploads/1/3/1/4/131454367/a37f9.pdf
    • https://cdn-cms.f-static.net/uploads/4465257/normal_604763d7e8ed8.pdf
    • https://cdn-cms.f-static.net/uploads/4460950/normal_5fe6d18d3878e.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/tugumeb/iso_9001_quality_manual_2015_sample.pdf
    • https://s3.amazonaws.com/lanaladu/how_long_do_reliance_water_heaters_last.pdf
    • https://s3.amazonaws.com/lanubili/kansas_dmv_learners_permit_study_guide.pdf
    • https://s3.amazonaws.com/jeduzizonox/xukesalazopudamoladofagir.pdf
    • https://uploads.strikinglycdn.com/files/25fe233a-1a12-45b6-a87e-72743b7791ee/tirikonenasu.pdf
    • https://s3.amazonaws.com/zepifudoxapo/how_do_i_change_the_code_on_my_adt_lock.pdf
    • https://s3.amazonaws.com/jiwotarotavuz/asia_political_map_free.pdf
    • https://uploads.strikinglycdn.com/files/6706035b-d964-4101-83cd-02c23085360e/noratidizi.pdf
    • https://s3.amazonaws.com/zunewidimem/bigifemutena.pdf
    • https://s3.amazonaws.com/varolexexus/govoxixepolixirevudas.pdf
    • https://s3.amazonaws.com/faluzotixupi/how_much_do_airplane_mechanics_make_in_canada.pdf
    • https://s3.amazonaws.com/mesotodimus/keratina_sin_formol_mercadolibre.pdf
    • https://s3.amazonaws.com/luborinizu/24248710450.pdf
    • https://uploads.strikinglycdn.com/files/581c4e8c-f57b-455b-8313-d8b49bbdce35/tefavesuxopowurarekuveguf.pdf
    • https://s3.amazonaws.com/banula/viminumutaxodetumuvumegu.pdf
    • https://s3.amazonaws.com/jigezilor/chip_avira_android_kostenlos.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://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e9c3.bin
949f7ada0834539c79eee6a27d4bcc8a79164ecc6649fa2f651d261854050edc
pdf-font-stream PDF embedded font (sfnt) at offset 0xE9C3 5352 bytes
font_01_sfnt_off0000fc14.bin
62fd20333174eae747a464e7e987d6511a88d450dd7b8cb4292e94ce7f9c821b
pdf-font-stream PDF embedded font (sfnt) at offset 0xFC14 10940 bytes