Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7ebc97d98a5095d…

MALICIOUS

PDF

69.7 KB Created: 2021-02-09 08:49:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: feeea083698f12397365a73b0bd98afd SHA-1: 0be70a876bad8a4a5d43bfc6e098ea43e790e7af SHA-256: c7ebc97d98a5095d44b406a6e8dd5f2f5cff573c2666e20a2ebd4e50639b370c
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 significant number of external links, identified as a link farm, suggesting a phishing or SEO manipulation scheme. The ClamAV detection and ML classifier strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URIs point towards the distribution of malicious content or redirection to phishing sites.

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://bologen.ru/123?utm_term=smithfield+middle+school+nc PDF link annotation
    • https://cdn.sqhk.co/ravawiku/urihdFp/gajemoji.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476272/normal_5fdf2abc3e689.pdfIn PDF document text
    • https://xilarurizajefa.weebly.com/uploads/1/3/5/3/135347329/4102520.pdfIn PDF document text
    • http://katermore.ru/nuxikukoxusakidztijs.pdfIn PDF document text
    • https://cdn.sqhk.co/miwizawi/Xf25mPt/doodle_devil_free_apk.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384464/normal_6004e30427150.pdfIn PDF document text
    • https://vogovolakufa.weebly.com/uploads/1/3/4/8/134874318/pobujimedotas.pdfIn PDF document text
    • https://cdn.sqhk.co/zipirevofu/hghaVJ6/international_checkers_online_game.pdfIn PDF document text
    • http://strita.space/accident_reporting_centre_burlington_ontario5bqwb.pdfIn PDF document text
    • https://cdn.sqhk.co/najafizox/Sig4QL1/monster_school_granny_chapter_2_minecraft_day_4.pdfIn PDF document text
    • https://cdn.sqhk.co/pananumujo/ihpgNoN/opera_mini_soccer_mobile.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412181/normal_5ff0874544194.pdfIn PDF document text
    • https://sedapelagug.weebly.com/uploads/1/3/4/1/134109100/zuwokejuribabogadol.pdfIn PDF document text
    • https://lizakefamejoxen.weebly.com/uploads/1/3/1/3/131384135/8939525.pdfIn PDF document text
    • https://cdn.sqhk.co/zujubiviv/jdidr8H/lonamaxufupuju.pdfIn PDF document text
    • https://cdn.sqhk.co/tobepeliv/jjPpjdZ/pesukogimon.pdfIn PDF document text
    • https://rotaxavevun.weebly.com/uploads/1/3/4/8/134884867/liwodatafemod.pdfIn PDF document text
    • https://cdn.sqhk.co/zetuzire/yhihd7m/diy_drift_trike_frame_kit.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://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_off0000c9ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9AB 4844 bytes
SHA-256: 978a0c0864d4092af0dc2cc99ed71810ba693503d49a63d8c00166042bbb387b
font_01_sfnt_off0000d9f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9F9 9980 bytes
SHA-256: e8c9e9bbea513fc48b505899b6f3352c178ea7402c4fd71f9f4b4a3757f262f9
font_02_sfnt_off0000fc07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC07 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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