Malicious PDF — malware analysis report

Static analysis result for SHA-256 5063a1124b972aad…

MALICIOUS

PDF

81.6 KB Created: 2021-03-02 04:38:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: f63e0fc84e83f360c97b50328d37065a SHA-1: 55fadb7e70c0ea714ae4aeaf9098b0a9dbf3cc66 SHA-256: 5063a1124b972aad22b74f3bff513d8b4e8d35caacbf75f55344486c4989d528
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF was identified as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm designed to redirect users to potentially malicious content or phishing sites. The presence of numerous external PDF links points towards an attempt to distribute further malicious content or engage in SEO manipulation for malicious purposes.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://lozipotod.ru/123?utm_term=what+is+metaphor+and+give+one+example PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4482405/normal_5ffc4fdd675e8.pdfIn PDF document text
    • https://cdn.sqhk.co/noviraxat/gLHZzt3/dixawarune.pdfIn PDF document text
    • https://zivozisexime.weebly.com/uploads/1/3/2/8/132814465/3833223.pdfIn PDF document text
    • https://cdn.sqhk.co/zelagagunogo/hjAuhjt/cake_recipes_for_diabetics_with_stevia.pdfIn PDF document text
    • https://depovazopalixu.weebly.com/uploads/1/3/2/6/132681382/8271837.pdfIn PDF document text
    • https://cdn.sqhk.co/vunalogivefu/SjjwggW/koxuxolotikizidometovu.pdfIn PDF document text
    • http://0fruit.space/43909665262cen5n.pdfIn PDF document text
    • https://cdn.sqhk.co/modajili/Vghjihe/banana_kong_game_guide.pdfIn PDF document text
    • https://cdn.sqhk.co/sebazisop/aThdijT/panazitexutenerolumemij.pdfIn PDF document text
    • https://vejazejama.weebly.com/uploads/1/3/1/3/131381369/segoziwep-nebugaposez-juxuwulavi-vefogegatukox.pdfIn PDF document text
    • http://1freedom.space/knowledge_base_html_template_nulledfzf7r.pdfIn PDF document text
    • https://zukixuvaxetili.weebly.com/uploads/1/3/5/9/135988851/f73ecba798a8.pdfIn PDF document text
    • https://cdn.sqhk.co/wabajevebe/he1gFAM/27367057085.pdfIn PDF document text
    • http://slmit.fun/phrase_structure_rules_tree_diagramhxfxl.pdfIn PDF document text
    • http://pasendapp.online/xanuzodazugepeputotufoey9zc.pdfIn PDF document text
    • http://selectgetc.top/31093562781tj4mq.pdfIn PDF document text
    • https://cdn.sqhk.co/winelolibug/jf1rw03/parentsquare_app_not_working.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486374/normal_5ffa7eed405c3.pdfIn PDF document text
    • https://cdn.sqhk.co/goxobuve/chdLjbQ/100_hits_rock_classics.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_off000100d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100D9 5512 bytes
SHA-256: 58ad998ca478244508367bcec303f68663815ecb847fcceea37fac423a8ff2d3
font_01_sfnt_off0001137c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1137C 11264 bytes
SHA-256: 8f2d6c7d1b43981b2c30164e3c9cb5c3056d3a86e2be27c39919fdc2c84d308b