Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d262ea175876f58…

MALICIOUS

PDF

75.2 KB Created: 2021-03-06 14:24:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: c21484fa4f2ee4b1d414a960fbf0a4e3 SHA-1: d944fde9430bd64f203be48c6ebc1493fd632ae1 SHA-256: 7d262ea175876f5840b4d41e125460e1635ec58a3895e112b78b94258451147a
156 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The heuristic 'PDF_SEO_LINK_FARM' suggests the document contains a large number of external links, likely to manipulate search engine results or direct users to malicious sites. The embedded URL 'https://vilenefex.ru/award?keyword=what+food+does+god+say+to+eat' further supports a phishing or scam-related attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • 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://vilenefex.ru/award?keyword=what+food+does+god+say+to+eat PDF link annotation
    • https://cdn.sqhk.co/woteruzid/Pgfmg9L/61073914451.pdfIn PDF document text
    • https://cdn.sqhk.co/watexoba/hgUheib/airport_baggage_scanner_images.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381541/normal_5fd733637e00b.pdfIn PDF document text
    • https://cdn.sqhk.co/dagozuwemep/ijg0hjD/duzamolatavowavarona.pdfIn PDF document text
    • https://cdn.sqhk.co/rudolikube/jdtgeGp/binuruxozolekakadejebuv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475987/normal_600c19f8ab0e9.pdfIn PDF document text
    • https://gediwidamavuluv.weebly.com/uploads/1/3/5/3/135348022/ee580a783.pdfIn PDF document text
    • https://nuropasidax.weebly.com/uploads/1/3/5/3/135393275/9312483.pdfIn PDF document text
    • https://cdn.sqhk.co/doporaba/eINaFje/receita_de_glace_simples_para_confeitar_bolo.pdfIn PDF document text
    • https://cdn.sqhk.co/mumeriretepi/cCgfCYZ/three_kingdoms_the_last_warlord_cheat_engine.pdfIn PDF document text
    • https://dezazobe.weebly.com/uploads/1/3/4/7/134755526/68814.pdfIn PDF document text
    • https://cdn.sqhk.co/gonolesuzam/ajeNvCI/subway_boy_runner.pdfIn PDF document text
    • https://cdn.sqhk.co/jogepirar/Ym475Z6/star_trek_fleet_command_refinery_tips.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/bc40746c-f5bf-48b7-990f-b093d7d30393/35544096792.pdfIn PDF document text
    • https://s3.amazonaws.com/dovulavavo/quiznos_nutritional_information_canada.pdfIn PDF document text
    • https://s3.amazonaws.com/dadupawo/pomexapulibalusedogakav.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cd833493-d725-4f07-ac12-5b5af7e81810/zotuxinojo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/758de950-1948-4100-86f2-c901bd2c80f6/how_to_cite_internet_sources_apa.pdfIn PDF document text
    • https://s3.amazonaws.com/widiku/jessica_jones_2_parents_guide.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_off0000ea97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA97 5156 bytes
SHA-256: 4fb51d69189dbf1170aa31cf99fe41076a3bff5fa486fb42ec3e06f1ca09b4cb
font_01_sfnt_off0000fc3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC3D 10364 bytes
SHA-256: 40caec61d9d54940738ef8e38cfdb700b9c512025dd3ac1027f20e88f2532b68

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