Malicious PDF — malware analysis report

Static analysis result for SHA-256 1abf214b561f677a…

MALICIOUS

PDF

106.8 KB Created: 2021-01-25 19:34:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: aed258da91bcb46fb4a86b9a49758973 SHA-1: 10fa224634b3d1e67972656057663414487a68c1 SHA-256: 1abf214b561f677a359c03201fc7a1e095f537f4bacc3f4ae6bb9b610d3793c0
126 Risk Score

Malware Insights

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

The PDF contains numerous external URLs, many of which are part of a link farm hosted on disposable domains, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of malicious activity, likely aiming to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 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://leonvi.ru/aws?utm_term=tarkov+key+card+guide PDF link annotation
    • https://fepepifufom.weebly.com/uploads/1/3/1/8/131872298/katajomuje.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4457563/normal_5ff8d96ceae71.pdfIn PDF document text
    • https://fovezifume.weebly.com/uploads/1/3/0/8/130874198/zenis_givolizokos_baravep.pdfIn PDF document text
    • https://cdn.sqhk.co/motulobugaji/jb20fie/smash_crash_derby_cars_3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408993/normal_600b25b4464f3.pdfIn PDF document text
    • https://cdn.sqhk.co/sujutowupolu/i4VhbAf/my_ghost_girlfriend_mod_apk.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4371240/normal_600173606802f.pdfIn PDF document text
    • http://kebotup.66ghz.com/53255086240.pdfIn PDF document text
    • http://jojalipubawil.22web.org/xixena.pdfIn PDF document text
    • https://zovipimisog.weebly.com/uploads/1/3/1/1/131163747/085cb7552ee55ce.pdfIn PDF document text
    • https://luwuberukad.weebly.com/uploads/1/3/1/4/131409546/gopumexi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378410/normal_5fc6c767db429.pdfIn PDF document text
    • https://cdn.sqhk.co/komajekolino/jtnjbhh/oddmar_android_1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482415/normal_5ff06d5e05b1d.pdfIn PDF document text
    • http://xapakemulu.22web.org/best_fitness_tracker_for_android_tablet.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
    • http://zizakipu.epizy.com/78927305874.pdfIn PDF document text
    • https://s3.amazonaws.com/bizamesuwepe/wulikepuxitikobigufilog.pdfIn PDF document text
    • https://s3.amazonaws.com/wukara/pegejikisukezaxavikizus.pdfIn PDF document text
    • https://s3.amazonaws.com/genedesowul/27361874111.pdfIn PDF document text
    • http://matunojusorim.epizy.com/n_e_c_ka_full_form.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_off00014fc9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14FC9 4768 bytes
SHA-256: 6d64c207a3ffe68c7bffc5024525d189365fefeb97c31f2e0f3ee7b5855ef34f
font_01_sfnt_off00016019.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16019 15200 bytes
SHA-256: 6e7f640565b367353516b0869572f220cacd4e8aa28438c82d4d811e70835d4f
font_02_sfnt_off00018f4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18F4E 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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