Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc9afed2c3fb3792…

MALICIOUS

PDF

75.0 KB Created: 2021-02-26 12:24:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 5e0a6eec253911be66f372c69641efa1 SHA-1: 3da75e9225503f2af4b481ccd4cd7ae7450c8780 SHA-256: fc9afed2c3fb3792db34652d83be3b9ab69ae57e6d1568e9f0deec80ff0522e2
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF document contains numerous external links, many pointing to disposable domains and hosted on services like weebly.com and sqhk.co, indicating a link farm or SEO scam. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of techniques used to redirect users to malicious sites.

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
  • 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.
  • 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://maypoin.ru/wix?keyword=gary+chapman+singer+songwriter PDF link annotation
    • https://cdn.sqhk.co/figesuweno/HUjdRuR/papulebi.pdfIn PDF document text
    • https://nalokulomegeze.weebly.com/uploads/1/3/4/7/134758193/654874.pdfIn PDF document text
    • https://rudarizegofuk.weebly.com/uploads/1/3/4/3/134355262/08d0cb849.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476765/normal_602e3b8f302a5.pdfIn PDF document text
    • https://cdn.sqhk.co/kalusoxat/bxcJ3Zo/turajivamagobitowepiti.pdfIn PDF document text
    • http://picsonair.com/oceanborn_survival_on_raft5689f.pdfIn PDF document text
    • https://soxexovefulobi.weebly.com/uploads/1/3/1/4/131484328/14c26ec6b.pdfIn PDF document text
    • https://cdn.sqhk.co/vimewiki/hcrjegc/cute_baby_puppies_videos.pdfIn PDF document text
    • https://cdn.sqhk.co/wijelukifap/he1AhaB/driving_school_2018_mod_apk_android_1.pdfIn PDF document text
    • http://dvigatel.guru/7259094664wbgz9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478398/normal_6024a999a0feb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387571/normal_60073c952e678.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384150/normal_5fe2c1123eacb.pdfIn PDF document text
    • https://cdn.sqhk.co/raxoxawupej/pjahiil/duxivunawipojivuzakata.pdfIn PDF document text
    • http://wejnpowk.space/sivaji_the_boss_telugu_audio_songs1hpn3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/gisujubolidine/77147698797.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_off0000e916.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE916 5540 bytes
SHA-256: 1dcbf013244d2eedff04c2083b769b6552883340ce6c7bd927df5a2b6f4f6f0d
font_01_sfnt_off0000fbdf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBDF 10360 bytes
SHA-256: 9f58305de117569661c01f96b0c4920729675d0462f0e2109b25ddd183403c6c

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