Malicious PDF — malware analysis report

Static analysis result for SHA-256 d717468435dee077…

MALICIOUS

PDF

88.6 KB Created: 2021-03-09 00:40:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: e1d49b731544a2b555ab27ca9c1aa352 SHA-1: dcd8801598db3b33ae10384efad11a7d60b9166b SHA-256: d717468435dee0772b6ccbf97185f63c13ea8f694d2ecefac374460365f56058
156 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 pointing to Weebly-hosted PDFs, suggesting a link farm or redirection mechanism for malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, likely phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and numerous external links are indicative of malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://xezojetit.ru/strik?utm_term=gospel+of+the+holy+12+pdf PDF link annotation
    • https://xavapijiwo.weebly.com/uploads/1/3/3/9/133997403/xefejosiv_tilokute.pdfIn PDF document text
    • https://jokokosewel.weebly.com/uploads/1/3/1/4/131437237/8663735.pdfIn PDF document text
    • https://pofifeluvoka.weebly.com/uploads/1/3/0/7/130739131/nikawuwezinonosep.pdfIn PDF document text
    • https://rogiguzuma.weebly.com/uploads/1/3/1/4/131438844/lobikide.pdfIn PDF document text
    • http://espacecmb.xyz/el_general_naranjo_capitulo_12ezuwz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4502268/normal_5fd9d8709d41e.pdfIn PDF document text
    • http://aycotoro0.xyz/pefosolvc8fw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410433/normal_603dd1a9e064e.pdfIn PDF document text
    • http://gdztut.com/sony_fs5_second_hand4h07f.pdfIn PDF document text
    • https://namekabesomi.weebly.com/uploads/1/3/4/6/134668803/malogemetenimow.pdfIn PDF document text
    • http://fly-drive.online/vocals_only_maher_zainoqjq2.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://s3.amazonaws.com/rumezo/wixujorozov.pdfIn PDF document text
    • https://s3.amazonaws.com/setigafat/furret_walk_song_piano_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/tikofaketonub/motores_de_busqueda_definicion_informatica.pdfIn PDF document text
    • https://s3.amazonaws.com/vuliwisuwig/credible_websites_for_medical_information.pdfIn PDF document text
    • https://s3.amazonaws.com/jamuluvuvava/dikewemomofarupowo.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001126b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1126B 4772 bytes
SHA-256: 25b09bd6abc2d03c72e0b7444d6b7ac8e660e09940839c1e5bbad33dd0323d0a
font_01_sfnt_off000122d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x122D2 10800 bytes
SHA-256: ec95781b00da6837dff1e01846aea31fff2dea2c46b8e1acaf78c5894d6832b6
font_02_sfnt_off000147a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x147A3 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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