Malicious PDF — malware analysis report

Static analysis result for SHA-256 745449a5aec9ee41…

MALICIOUS

PDF

70.5 KB Created: 2021-04-30 00:07:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: c0a5ef80070b7167d7ccaa65713743f2 SHA-1: ee1f409eae3b6c038577752cfc4825c3e025faaa SHA-256: 745449a5aec9ee41204ed9577bfd82b4ebac9d959098be647fa9aab66f4db946
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was identified as malicious by ClamAV and an ML classifier, exhibiting characteristics of a link farm. It contains numerous external URIs pointing to disposable hosting domains, suggesting an attempt to redirect users to malicious content or phishing sites. The presence of multiple external links and the detection by security tools strongly indicate a malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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=services+minister+of+sindh PDF link annotation
    • https://wufipalowev.weebly.com/uploads/1/3/4/5/134595621/6802324.pdfIn PDF document text
    • https://fanamixaxa.weebly.com/uploads/1/3/4/0/134017579/8270c69761.pdfIn PDF document text
    • http://rewita.fun/dukonimebejerunm7quq.pdfIn PDF document text
    • http://djami.ru/fanatical_football_mod_apkk8mmw.pdfIn PDF document text
    • http://italywow.info/breastfeeding_when_milk_comes_inhlhf9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4494661/normal_6043e13551bdc.pdfIn PDF document text
    • http://kersita.space/alcatel_pixi_4_firmware_freetfpcv.pdfIn PDF document text
    • http://busivel.xyz/what_does_the_door_symbolize_in_the_metamorphosisfxs6b.pdfIn PDF document text
    • https://dapapakutuluj.weebly.com/uploads/1/3/1/3/131384169/9498535.pdfIn PDF document text
    • http://nashremont.site/sawuxumukukumeruwedeto0u46b.pdfIn PDF document text
    • https://tiletemilowa.weebly.com/uploads/1/3/2/7/132710791/1597997.pdfIn PDF document text
    • http://piredvizhnik.com/zudujapefupobebas35gn.pdfIn PDF document text
    • http://yourbigdick.space/pojumojetopasudiwitawndqmj.pdfIn PDF document text
    • http://carluxepaint.site/boss_baby_girl_birthday_party_ideash5wby.pdfIn PDF document text
    • http://baykamif.space/radirawozozoporawixejebibp93xw.pdfIn PDF document text
    • https://sidilatadafexu.weebly.com/uploads/1/3/1/1/131164021/solofo.pdfIn PDF document text
    • http://shoop-fg.ru/73382605795upzyl.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501659/normal_5feb239c386c7.pdfIn PDF document text
    • https://rolurenogilu.weebly.com/uploads/1/3/4/0/134096536/fofaferu-punazifibuji-xirug.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365580/normal_5ff5fa7fd02e0.pdfIn PDF document text
    • http://busibear.com/19900041633rgrbw.pdfIn PDF document text
    • http://leftoutclub.com/college_algebra_5th_edition_beecherkvu6s.pdfIn PDF document text
    • https://xominamoluz.weebly.com/uploads/1/3/4/3/134319977/xosoguxunositigizixu.pdfIn PDF document text
    • https://josozigigararu.weebly.com/uploads/1/3/2/6/132681886/7e01389ed15b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000d67c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD67C 5184 bytes
SHA-256: 605966c0ea112fa2697b3e64ffd3dec42c3728c7b979c956179efede1fcdb4eb
font_01_sfnt_off0000e802.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE802 10704 bytes
SHA-256: 89607e4ab18e6b26f1dfa6498136e047fc17a89ed4f97043a52057386040efb0