Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ff611f974bc1844…

MALICIOUS

PDF

88.9 KB Created: 2021-02-27 07:10:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 791ead04073091ac899910fcdd6e90dd SHA-1: af1928819314416417205efeae1ef04a85919807 SHA-256: 0ff611f974bc1844f06da1e268f1e3df57c0164cc59e2d7f6b8c326f2e74b168
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a large number of external links, many hosted on disposable domains, suggesting a link farm used for phishing or malware distribution. The ClamAV detection and ML classifier strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and numerous external links are indicative of a malicious document designed to redirect users to potentially harmful content.

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://dugedepap.ru/award?keyword=maze+runner+3+bad+ending PDF link annotation
    • https://cdn.sqhk.co/visukodo/0gjxges/81733995820.pdfIn PDF document text
    • http://gubixazolela.sportsontheweb.net/2011_rav4_v4_mpg.pdfIn PDF document text
    • http://kofodotig.sportsontheweb.net/fovonejasimekeguv.pdfIn PDF document text
    • https://cdn.sqhk.co/tuteremekome/dmgdcgg/can_anyone_learn_to_sing_better.pdfIn PDF document text
    • https://tazegeravi.weebly.com/uploads/1/3/5/3/135390309/2991652.pdfIn PDF document text
    • https://cdn.sqhk.co/gabamulijawe/gcHMxWO/50042449952.pdfIn PDF document text
    • https://rifewageza.weebly.com/uploads/1/3/5/3/135349229/pomuxowo-sozunusi-fekeja-xusinejotadixid.pdfIn PDF document text
    • https://wipowolulufobud.weebly.com/uploads/1/3/1/4/131437369/00de2e62f.pdfIn PDF document text
    • https://cdn.sqhk.co/nerenina/icheXjh/52269592800.pdfIn PDF document text
    • https://tekevifumufov.weebly.com/uploads/1/3/0/7/130739519/3644695.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392650/normal_6023f33f2b2c0.pdfIn PDF document text
    • https://detidigem.weebly.com/uploads/1/3/4/4/134491675/fimesosofexudovar.pdfIn PDF document text
    • https://nibovipuduri.weebly.com/uploads/1/3/0/8/130814681/wositisuzok.pdfIn PDF document text
    • https://rejosunofefi.weebly.com/uploads/1/3/0/8/130874376/fbba6dd46a1e40d.pdfIn PDF document text
    • https://cdn.sqhk.co/wezufunin/b5Ljj8Z/flat_pack_cabinets_melbourne.pdfIn PDF document text
    • http://xawegap.mywebcommunity.org/notifivumeferema.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off00011ce3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11CE3 5140 bytes
SHA-256: 7f9d77eeaf6bb29d135e414e4649eb04425711065b6b80b3610526989f7176d6
font_01_sfnt_off00012e83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12E83 12572 bytes
SHA-256: dd83d256e81d828fe155980ef78e11d7ea5feed41ee28b03e1d0885f3d90c2bd

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