Malicious PDF — malware analysis report

Static analysis result for SHA-256 8fa7e0ca14ddc608…

MALICIOUS

PDF

78.2 KB Created: 2021-03-08 04:43:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: 63e14cfa93e159a3c118cd891e75f0fd SHA-1: 2e50ce1f85358629fd17c6874a92913c11af9f7e SHA-256: 8fa7e0ca14ddc608349ca05d9566e83bed52099841fb22567842f7fecd77b412
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains an embedded URI pointing to a suspicious domain, identified by heuristics as a link farm on disposable hosting. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or a scam. Although no scripts were extracted, the presence of external URIs and the overall detection suggest the document is designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 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://soxebez.ru/strik?utm_term=how+dangerous+is+navy+seal+training PDF link annotation
    • https://zudovizu.weebly.com/uploads/1/3/4/3/134338339/natafuxexo.pdfIn PDF document text
    • http://iranomics.com/talking_snake_cartoon0jztq.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4462046/normal_5fde3e06ad3fe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404987/normal_602cb1c222f59.pdfIn PDF document text
    • http://topdiscount.pro/science_research_paper_example_high_schooltnwz2.pdfIn PDF document text
    • http://zarabotok.space/6069770264n4bjm.pdfIn PDF document text
    • http://alcexpress3.xyz/curso_de_electronica_cekit_completondu5g.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382197/normal_5feaf1282ca42.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409420/normal_602c99d7a50a2.pdfIn PDF document text
    • https://juxapokidopelif.weebly.com/uploads/1/3/1/6/131606881/f3df6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417123/normal_5ffb4f324c2f2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411490/normal_602b932a9afdc.pdfIn PDF document text
    • http://qupieasy.online/warship_battle_games_for_pc_freeemde4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413707/normal_5ff3c321d7768.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/fopalew/wovilosipawijotin.pdfIn PDF document text
    • https://s3.amazonaws.com/tiluwisulepam/9194986445.pdfIn PDF document text
    • https://s3.amazonaws.com/lefemijip/sololearn_c.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_off0000e73b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE73B 5092 bytes
SHA-256: 953b43c31937d3e17f7f68f108ae75d129172af7607b8bd43064feded0090e46
font_01_sfnt_off0000f8ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8AE 10788 bytes
SHA-256: 84799bbf0ad142835102840e59e86ec46a6e2cbbeab36f6868178e0fa92d4373
font_02_sfnt_off00011d55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D55 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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