Malicious PDF — malware analysis report

Static analysis result for SHA-256 7109460e920ec4d6…

MALICIOUS

PDF

73.5 KB Created: 2020-12-10 10:15:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: f5ffadfde9c7e184f40727493228fa65 SHA-1: 7ed744102aa60f6d988516cb23ea19b4ff529ef7 SHA-256: 7109460e920ec4d6b625d87ea2db5558f3f4935246c70bdc18fd71a4beae45bc
284 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF file is identified as malicious by multiple heuristics and a machine learning classifier, indicating it's a phishing lure. It contains numerous embedded links, many pointing to redirectors and disposable hosting, designed to lead users to malicious sites. The 'SE_MFA_LURE' heuristic suggests the document is crafted to harvest credentials or abuse multi-factor authentication, likely by presenting a fake login or verification page after a user clicks one of the embedded links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • 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.
  • 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://traffking.ru/aws?utm_term=marriage+certificate+haryana+pdf In PDF document text
    • https://jarapitoxedomel.weebly.com/uploads/1/3/1/4/131437170/pofilufe.pdfIn PDF document text
    • https://kivofijola.weebly.com/uploads/1/3/4/3/134309380/tujurevematid.pdfIn PDF document text
    • https://tivakoxidedopa.weebly.com/uploads/1/3/0/7/130776298/zewum.pdfIn PDF document text
    • https://wipasajumavadus.weebly.com/uploads/1/3/4/7/134775966/5368274f48.pdfIn PDF document text
    • https://vifatogiso.weebly.com/uploads/1/3/4/3/134316440/fobexuxag.pdfIn PDF document text
    • https://xavoxoxuda.weebly.com/uploads/1/3/1/3/131379246/12d093357.pdfIn PDF document text
    • https://vowitaxarutivo.weebly.com/uploads/1/3/4/8/134870451/17029acd0f001.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4406775/normal_5fd07cd057eb6.pdfIn PDF document text
    • https://rusopanuguxixat.weebly.com/uploads/1/3/4/6/134640346/8150323.pdfIn PDF document text
    • https://firedisivimi.weebly.com/uploads/1/3/0/9/130969818/gafunelana.pdfIn PDF document text
    • https://nuzepobijane.weebly.com/uploads/1/3/4/8/134885792/datusulidatumuj.pdfIn PDF document text
    • https://topizamo.weebly.com/uploads/1/3/4/4/134435864/jujijef_vunow_tezesofaxumi_xulesuzojujix.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf498bf81c9a2a0c9828c3/1606371724052/descendants_of_abraham_and_keturah.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc36ff3c6d9645836323309/t/5fc50200f3de5e49b502b203/1606746624820/rwu_spring_final_exam_schedule.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d28e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD28E 5312 bytes
SHA-256: 2cbc2ced235a10999f77245a389f899344b05ff1fb234aeefc78162159c54fa1
font_01_sfnt_off0000e4b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4B6 10540 bytes
SHA-256: a39da62b82da26356a122f60f115ecbe42165e668e095ed085874c93512119fd
font_02_sfnt_off000108c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108C9 4248 bytes
SHA-256: fd3305475cb508c62f4f311136e9aac5676adaf9782329f01601d828aefdb3a5