Malicious PDF — malware analysis report

Static analysis result for SHA-256 c68994491b7353a7…

MALICIOUS

PDF

73.4 KB Created: 2021-02-20 10:45:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: f46af48bfc6e359529583cca747bf234 SHA-1: 38d672fc488c485a8d3109310f151bd7052166ff SHA-256: c68994491b7353a7564a6c29970fe922184f3c87a313e47dae7d0e7c0c5cdadc
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The presence of numerous external URIs, including one pointing to a suspicious domain ('maypoin.ru'), suggests it is designed to redirect users to malicious content or phishing sites. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' further supports this, indicating the PDF is part of a link farm on disposable hosting, commonly used for SEO poisoning or distributing malware.

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://maypoin.ru/wix?keyword=integrated+math+2+volume+2+textbook+pdf PDF link annotation
    • https://vulemozebo.weebly.com/uploads/1/3/4/6/134693025/5367116.pdfIn PDF document text
    • http://bio-ita.fun/just_dance_2_gummy_bear_songlpoac.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424646/normal_602de7005449c.pdfIn PDF document text
    • http://babbieshop.ru/how_to_contact_walmart_hrwl5uv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382407/normal_6030a561c131e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451369/normal_5fda95a219cd7.pdfIn PDF document text
    • http://wordwild-store.com/livideroc1bz1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4478131/normal_5fc7e92701776.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366344/normal_5fd2040286fa8.pdfIn PDF document text
    • http://kinokaiff.space/ark_shocking_tranquilizer_dart5cxrm.pdfIn PDF document text
    • http://trend-sales.fun/bridgedale_socks_size_guideynomq.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/liwafo/75183300579.pdfIn PDF document text
    • http://luwefotikejumu.rf.gd/balance_sheet_liabilities_and_stockholders_equity.pdfIn PDF document text
    • https://s3.amazonaws.com/zatazewoz/28470961984.pdfIn PDF document text
    • https://s3.amazonaws.com/gogoxowiniza/ibps_online_application_form_clerk_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/xafaxotaful/82968421848.pdfIn PDF document text
    • https://s3.amazonaws.com/bejeseja/bruxelles_formation_call_center.pdfIn PDF document text
    • https://s3.amazonaws.com/pibajuwi/cricket_19_crack_only.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_off0000e2de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2DE 5680 bytes
SHA-256: 2893519ebc8122f6f761851e99790619a16fddc59dfba0b699af96dc4164b17f
font_01_sfnt_off0000f618.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF618 9904 bytes
SHA-256: 1d77398cca630d385e142329f06be5ce0c0824227d7e310bdab74b6d255c1beb

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