Malicious PDF — malware analysis report

Static analysis result for SHA-256 f36c5cee51faf38c…

MALICIOUS

PDF

67.8 KB Created: 2021-02-28 04:36:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 1ea38aaede0e42af2bf1d37fcc47e84c SHA-1: 2e1244c0f50f5013d23c284b29025cf2b56be6bc SHA-256: f36c5cee51faf38c05b621ccbff0d51ff77076fc33a46797de9181ebc1613667
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://ponafet.ru/award?keyword=english+quran+translation+by+mufti+taqi+usmani PDF link annotation
    • https://telozigigozato.weebly.com/uploads/1/3/4/3/134310186/1663833.pdfIn PDF document text
    • https://sojugadetoju.weebly.com/uploads/1/3/4/6/134683069/benezisozus.pdfIn PDF document text
    • https://vezudoki.weebly.com/uploads/1/3/4/3/134320633/6563988.pdfIn PDF document text
    • https://pibefugaradaxo.weebly.com/uploads/1/3/1/3/131398186/3151399.pdfIn PDF document text
    • https://mujesazuf.weebly.com/uploads/1/3/2/3/132302915/5280123.pdfIn PDF document text
    • https://gematisi.weebly.com/uploads/1/3/4/5/134599806/tenawuponuwajitok.pdfIn PDF document text
    • https://tabupuja.weebly.com/uploads/1/3/4/6/134647436/pamareja-bununejevi-gojegegor-zejuzakixak.pdfIn PDF document text
    • https://cdn.sqhk.co/jurugaguvedu/gi7R3gj/most_random_facts_in_the_world.pdfIn PDF document text
    • https://kipidabivipili.weebly.com/uploads/1/3/4/3/134340994/7019946.pdfIn PDF document text
    • https://padawevuwelidas.weebly.com/uploads/1/3/1/4/131438111/didojikosusi.pdfIn PDF document text
    • https://cdn.sqhk.co/gevagedubop/jDAXIhf/82401148243.pdfIn PDF document text
    • https://cdn.sqhk.co/boguzivipel/bhhPgck/boy_murdered_online_gaming.pdfIn PDF document text
    • https://sivabukejiwija.weebly.com/uploads/1/3/4/4/134459056/suzamegimipodulejubo.pdfIn PDF document text
    • https://mewuvonemifutu.weebly.com/uploads/1/3/5/3/135394867/bakadezuj.pdfIn PDF document text
    • http://togoxuruk.22web.org/yugioh_spirit_caller_guide.pdfIn PDF document text
    • https://kususeni.weebly.com/uploads/1/3/2/7/132740764/3031bf5e96ec5.pdfIn PDF document text
    • https://vipigenomunopem.weebly.com/uploads/1/3/1/3/131398348/fibite.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nitufuluxa.epizy.com/american_criminal_justice_system.pdfIn PDF document text
    • http://misibumisap.rf.gd/5665878294.pdfIn PDF document text
    • http://wexereza.rf.gd/32549084026.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_off0000cc9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC9A 5504 bytes
SHA-256: 0f3a9a0134debd8d00a62f7f45ef566541d442be2b9fd64a358eaf46e158ceb6
font_01_sfnt_off0000df38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF38 10116 bytes
SHA-256: efd8730ffbf7cb22b38ac15a53f94282e9a757a3b014d98aba39be4596b46d12

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