Malicious PDF — malware analysis report

Static analysis result for SHA-256 27022b6ac2b61b4a…

MALICIOUS

PDF

76.1 KB Created: 2021-05-08 19:11:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 020119b96b053b52e7ee9c72a11de642 SHA-1: 55c2b42cb4384704cfb460568598ed3a4dd46523 SHA-256: 27022b6ac2b61b4a70cb41c930936fd909e06b87978b5b859a866197d9a9f5e2
194 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The document contains a large number of external links, many pointing to disposable hosting, suggesting a link farm designed to redirect users to potentially harmful content. The presence of a 'download' button lure further supports a phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://jumiwimov.ru/strik?utm_term=the+spectacular+now+full+movie+download+filmyzilla PDF link annotation
    • https://cdn.sqhk.co/fomezawelud/heiatjg/86072705798.pdfIn PDF document text
    • https://cdn.sqhk.co/fowoleleda/jhijGjd/60895392805.pdfIn PDF document text
    • http://socialwave.me/o_que_fazer_aps_terminar_um_relacionamentog3svr.pdfIn PDF document text
    • http://form-copyrightservices.com/kitchen_banana_yoshimoto_settinga32qp.pdfIn PDF document text
    • http://logvoz.ru/zawikgww23.pdfIn PDF document text
    • https://ramorebuba.weebly.com/uploads/1/3/4/8/134898890/3710839.pdfIn PDF document text
    • http://raftgjgr.space/xipirekubagine6e4jg.pdfIn PDF document text
    • http://znatural.space/99589296743s2qyw.pdfIn PDF document text
    • https://mavilefisubagar.weebly.com/uploads/1/3/1/6/131606233/mariru-wuzaginese-funanunax.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://923a8ca3-316b-4844-b38f-9bc955ad4852.filesusr.com/ugd/312e0e_ec8429df7bf64b17b146b99dfd6dd4a0.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/nufidibodudulad/what_a_cashiers_check_looks_like.pdfIn PDF document text
    • https://s3.amazonaws.com/zemunomipazikez/68032572735.pdfIn PDF document text
    • https://s3.amazonaws.com/mozedijiz/bancomer_telefono_reportes.pdfIn PDF document text
    • https://5e1449e8-5ae4-4a15-bc7a-ee23795bc964.filesusr.com/ugd/3a34a5_7fd1c5e4bee849a88e767f36279f6adb.pdf?index=trueIn PDF document text
    • https://37cc4ef3-276f-49d0-84f3-8bc08bbde6a9.filesusr.com/ugd/e4a5d4_a7647f6f6590441f9e09fb7d21691242.pdf?index=trueIn PDF document text
    • https://f72e0e13-a873-49c5-9cb5-3c2848b8c5b2.filesusr.com/ugd/f8ba4b_271ccffc1c6d44ec912a69f45aef5f45.pdf?index=trueIn 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_off0000eb4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB4A 5648 bytes
SHA-256: cdf7041d92efe962f7ff582f10013dba9254c74822c538c27cf0d6d1ecf7532c
font_01_sfnt_off0000fe79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE79 10584 bytes
SHA-256: 7ee6a1f00b425a08844525b359590d60dcfd8fcb6a7ad4a78540f76d02652e8a

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