Malicious PDF — malware analysis report

Static analysis result for SHA-256 05bd002dd6e4fce1…

MALICIOUS

PDF

90.1 KB Created: 2021-04-06 19:19:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 2a1f2a5958a6a7ef21a24746792a4572 SHA-1: ec7a5dd4810b470be0e42e12c7b5fad0f70400e9 SHA-256: 05bd002dd6e4fce100a9856d63a8c606e93f1da835a7bfd4da9b45da742b21de
126 Risk Score

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 0.9996

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://ponafet.ru/123?utm_term=candidates+platforms+canada+2019 PDF link annotation
    • http://kewokuxumuzig.medianewsonline.com/suxivoraj.pdfIn PDF document text
    • http://pumutug.iblogger.org/29036057990.pdfIn PDF document text
    • http://xosubowavenu.mypressonline.com/98330622582.pdfIn PDF document text
    • https://nidukonijeso.weebly.com/uploads/1/3/1/3/131381088/negonidowif-poxuligula.pdfIn PDF document text
    • https://cdn.sqhk.co/finulepaf/egdeUij/29472181509.pdfIn PDF document text
    • https://sewusadata.weebly.com/uploads/1/3/5/4/135401056/xubeluran.pdfIn PDF document text
    • https://lolujimibo.weebly.com/uploads/1/3/0/7/130740441/8467354.pdfIn PDF document text
    • http://filexupop.iblogger.org/15342902017.pdfIn PDF document text
    • https://cdn.sqhk.co/xojurolaruk/jdMhfjb/99269085707.pdfIn PDF document text
    • http://ronifibofizet.medianewsonline.com/star_spangled_banner_guitar_tab.pdfIn PDF document text
    • https://vevurufutugar.weebly.com/uploads/1/3/4/7/134737477/2f797a4.pdfIn PDF document text
    • http://xilexevu.scienceontheweb.net/ledesejet.pdfIn PDF document text
    • http://tularafujebok.iblogger.org/first_aid_usmle_step_1_2019_download.pdfIn PDF document text
    • http://figedizizexi.22web.org/the_bfg_book_cover.pdfIn PDF document text
    • https://wubigunes.weebly.com/uploads/1/3/4/5/134507070/volojole-mebusenanigusu-nafaxifidabavob-tozaxotipoj.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zerakunutage.epizy.com/20638101666.pdfIn PDF document text
    • http://tevaluzax.atwebpages.com/23902389927.pdfIn PDF document text
    • http://buxuxabef.rf.gd/whens_the_next_prime_minister_announcement.pdfIn PDF document text
    • http://konapawejiwevin.epizy.com/mastertech_tv_manual.pdfIn PDF document text
    • http://dezezefisimel.rf.gd/military_campaign_plan_format.pdfIn PDF document text
    • http://fegedux.epizy.com/lebalojawetavawa.pdfIn PDF document text
    • http://surafupomef.epizy.com/96598414068.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_off00012047.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12047 5688 bytes
SHA-256: a8a4c902bcbcfe91c2b080ee348782362f06056610c70c2b1665573a5913b717
font_01_sfnt_off0001338c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1338C 11600 bytes
SHA-256: 59eb4d91632ce7a4a710528830dbde3a101140565276d2dd6a9644cf4d64b7df

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