Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c6038f02b6086fc…

MALICIOUS

PDF

75.0 KB Created: 2021-03-21 01:46:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 806b25e3f6db9a9e2dbd7b0467f8b27b SHA-1: e2ccb6bccf5f378c6f196a0bc57e7bde3bf58a1e SHA-256: 0c6038f02b6086fc7d91f6c79cbd9e508f3c4b47b11bf549a4d5c72ae0dacbc3
186 Risk Score

Malware Insights

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

This PDF file contains a large number of external links, many hosted on disposable domains, indicating a link farm or phishing operation. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and numerous external URLs point towards an attempt to redirect users to malicious sites, likely for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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.
  • 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://dugedepap.ru/strik?utm_term=ford+ranger+transmission+codes PDF link annotation
    • https://vibisorimujeke.weebly.com/uploads/1/3/4/3/134344086/5605969.pdfIn PDF document text
    • https://xisipoven.weebly.com/uploads/1/3/4/2/134266343/jimigokubapi_gaxisu_xowuta.pdfIn PDF document text
    • https://wubenigulusetib.weebly.com/uploads/1/3/4/7/134712949/sonida.pdfIn PDF document text
    • http://urott-hu.com/are_mini_splits_worth_the_money36y3i.pdfIn PDF document text
    • http://pet-guru.shop/tomb_runner_2_unblockeds282z.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379736/normal_5ff64b2b74f93.pdfIn PDF document text
    • https://werovowota.weebly.com/uploads/1/3/4/7/134766705/midavinavefu_jujeg.pdfIn PDF document text
    • https://koduvorubosu.weebly.com/uploads/1/3/4/7/134719400/b30d4fc.pdfIn PDF document text
    • https://tizukusijevawus.weebly.com/uploads/1/3/4/4/134454617/fenurixavurenajaja.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416791/normal_60108e1aec260.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379233/normal_5fcc007d45a1e.pdfIn PDF document text
    • https://jidakizunulub.weebly.com/uploads/1/3/1/3/131381167/9538540.pdfIn PDF document text
    • https://leditolovon.weebly.com/uploads/1/3/2/6/132682688/59377.pdfIn PDF document text
    • http://semengergel.ru/bang_bang_full_movie_free_mkv0adyq.pdfIn PDF document text
    • https://fekazivijiwawad.weebly.com/uploads/1/3/4/6/134687088/852393.pdfIn PDF document text
    • https://fazipebafutemi.weebly.com/uploads/1/3/1/8/131857540/867d6ba9c.pdfIn PDF document text
    • http://obmenkalnr.online/cephalosporins_listr0qap.pdfIn PDF document text
    • http://distornyup.site/ver_el_efecto_mariposa_online_latinof8po6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://likeketafox.rf.gd/kibaxeraga.pdfIn PDF document text
    • http://vofefigekoloru.epizy.com/tovogawa.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e683.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE683 5180 bytes
SHA-256: a3f3903d00370a8811da1702e4cd7a18cd2ca6ca610c84410ba3ac2c459cd393
font_01_sfnt_off0000f814.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF814 10872 bytes
SHA-256: 490f915423f7b4ad19cddb98afaea15b31bedbb39b265acd619bee62850c8552

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