Malicious PDF — malware analysis report

Static analysis result for SHA-256 77291831ac6014de…

MALICIOUS

PDF

77.4 KB Created: 2020-12-28 04:46:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 6a56ae658bfb3f474d24a7fc5dea8a3f SHA-1: 1592d7f0ed2b4035914d7c7c55720af5b4ea4b16 SHA-256: 77291831ac6014de9087c07bca69dd1e223696498931cd143231779a69c758f2
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF file was flagged by multiple heuristics, including ClamAV and an ML classifier, as malicious. It contains a large number of external links, indicating it is likely part of an SEO link farm designed to redirect users to malicious sites. The primary malicious URL identified is https://traffnew.ru/strik?utm_term=cooking+fever+gems+cheat+ipad, which is likely used to distribute further payloads or phishing content.

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 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.
  • 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://traffnew.ru/strik?utm_term=cooking+fever+gems+cheat+ipad PDF link annotation
    • https://cdn.sqhk.co/vogoxaginoje/jqhfbxf/tujipaxabexidapi.pdfIn PDF document text
    • https://cdn.sqhk.co/fumazuri/dvjbzg3/vitacost_customer_service.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366957/normal_5fb88e900c697.pdfIn PDF document text
    • https://zabugejagovim.weebly.com/uploads/1/3/1/6/131637755/komezolosabowo.pdfIn PDF document text
    • https://cdn.sqhk.co/mibuxedufexi/e4Sgcii/61067598641.pdfIn PDF document text
    • https://cdn.sqhk.co/birenejar/uwQGqic/46624054339.pdfIn PDF document text
    • https://cdn.sqhk.co/favejofu/Zjipjc7/gepezizigajar.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411932/normal_5fc9e63405812.pdfIn PDF document text
    • https://cdn.sqhk.co/pefibovip/cje9kiM/vafadizutivokav.pdfIn PDF document text
    • https://cdn.sqhk.co/delinilipo/sGohd2x/best_online_fishing_shop_usa.pdfIn PDF document text
    • https://vugiwaxe.weebly.com/uploads/1/3/4/7/134739196/zurenimufezus.pdfIn PDF document text
    • https://tolutewegudef.weebly.com/uploads/1/3/4/0/134097468/185261d39cb.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
    • https://uploads.strikinglycdn.com/files/dec1faa6-3c4b-4035-96f1-e7c3f42c548e/jiwubufuzevuvidujozusoxip.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d55c8280-8f25-4ccf-869b-b8ae0c78c818/68502532444.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b031c7eb-27ba-490f-9f4d-0ca9c02af212/nakaxuvimusabukilamura.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/37bc6ecb-ac38-4b8b-a9a7-fc5abee59bc8/punudibelumuluviridexe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c18da44b-6b2f-4064-92f3-be03c19a9ebe/analects_of_confucius_download.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e0ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0EF 5472 bytes
SHA-256: 6555ec8b5872c963619d512225fefb3989ff9e4b40aca99188d722b4e6cde8d9
font_01_sfnt_off0000f36e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF36E 11584 bytes
SHA-256: 62d2d1b87369a1a79c494151b104b2d06a19027b4a927dc13fe50d56beb9c634
font_02_sfnt_off00011ab6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11AB6 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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