Malicious PDF — malware analysis report

Static analysis result for SHA-256 a62e462bc3027792…

MALICIOUS

PDF

68.8 KB Created: 2020-12-29 22:54:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 04f5a468be8affbd9e42c89e9abcc9e3 SHA-1: d508161d1fd3e57ca2cea3940fe3d3b0e0859ee8 SHA-256: a62e462bc30277922f45bf15d8bd01e8b33db810193ea7593d3c494c653e8609
244 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was identified as malicious by ClamAV and an ML classifier. It contains a large number of embedded links pointing to external PDF files, many hosted on disposable domains, indicating a link farm likely used for SEO manipulation or to distribute further malicious content. One of the primary links directs to a known malicious redirector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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.
  • 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/strik?utm_term=zombie+slasher+apk In PDF document text
    • https://cdn-cms.f-static.net/uploads/4455375/normal_5fd5fdcceda46.pdfIn PDF document text
    • https://mabobuloxulekev.weebly.com/uploads/1/3/4/6/134692970/koluwapekalo.pdfIn PDF document text
    • https://jezitazosebizag.weebly.com/uploads/1/3/4/7/134700096/xutef_dikak_kobinakafowumi_tivaguxulep.pdfIn PDF document text
    • https://vunukufe.weebly.com/uploads/1/3/4/6/134640969/c5569debda3d8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376101/normal_5fb85b187fc03.pdfIn PDF document text
    • https://panikelixiguju.weebly.com/uploads/1/3/4/4/134478359/f1a9e983bdb46c.pdfIn PDF document text
    • https://gupekuvexo.weebly.com/uploads/1/3/4/6/134610658/ecee1c8aff58.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408863/normal_5f9b063320ceb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413967/normal_5fb2b7a0ce072.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365584/normal_5f87701d5e3c4.pdfIn PDF document text
    • https://pukotegifo.weebly.com/uploads/1/3/0/8/130874060/momamotixuvo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485580/normal_5fd1e1f2627e8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369323/normal_5fa269899f52e.pdfIn PDF document text
    • https://sezavifibeka.weebly.com/uploads/1/3/4/4/134463458/wudarozejunexuj_rigukorak_jezuwekiz.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/ac307fb3-bf87-4ef8-ae63-0dedc5321ffa/apk_mod_movie_hd.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c5a0bc09-c3f3-40cb-9c91-1e3cc970380a/96826761039.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_off0000d1e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1E7 5220 bytes
SHA-256: dec645626d8850a4995ddea31e549dccd59cfbb279f73317eafaa47dc0f5cd5e
font_01_sfnt_off0000e373.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE373 10332 bytes
SHA-256: 9b9457d429b67f2dede01ea211caa5ca32f25017b1b2f08061427b366cd5161a

Open this report in the interactive analyzer, or submit your own file for analysis.