Malicious PDF — malware analysis report

Static analysis result for SHA-256 08faa0c08254936b…

MALICIOUS

PDF

79.7 KB Created: 2021-03-19 08:18:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: 45a2feb2c74108c3090ed7ec7cd65efa SHA-1: 9ba7481547c2648759b42feab3f48ddcc9d91979 SHA-256: 08faa0c08254936b854a4be03c7c1c6c9b91d7ee0baf2d3ffd462616670c2408
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan' and an ML classifier indicating a high probability of maliciousness. The presence of a large number of external links, many pointing to benign-looking PDFs, suggests a link farm or a method to obscure malicious destinations. One of the extracted URLs, 'https://fokemale.ru/123?utm_term=anaganaga+o+dheerudu+movie+song', is highly suspicious and likely leads to a malicious payload or phishing page.

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://fokemale.ru/123?utm_term=anaganaga+o+dheerudu+movie+song PDF link annotation
    • https://turujidimubexu.weebly.com/uploads/1/3/4/7/134766340/bagojiliwu.pdfIn PDF document text
    • https://bilunoxenaxu.weebly.com/uploads/1/3/4/4/134474733/muwusefewimalipeno.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4401517/normal_5fe4010c5ccca.pdfIn PDF document text
    • https://luboguti.weebly.com/uploads/1/3/0/7/130739177/1531012.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376096/normal_5fe6601ae7dd9.pdfIn PDF document text
    • http://nebofonuve.mywebcommunity.org/wajizujogavuwefur.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449599/normal_5ffe1d146036e.pdfIn PDF document text
    • https://vaxatimiroxak.weebly.com/uploads/1/3/4/6/134617636/8327355.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393483/normal_601759ad2bbb7.pdfIn PDF document text
    • https://fokuxadeji.weebly.com/uploads/1/3/4/5/134585395/vixaniwozox.pdfIn PDF document text
    • https://bifekanivixu.weebly.com/uploads/1/3/1/4/131408854/3678420.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/xumakomowi/ladies_shirt_cutting_pattern.pdfIn PDF document text
    • https://s3.amazonaws.com/kezemiradigu/jurnal_tentang_cacing_pita.pdfIn PDF document text
    • http://kikukuvikato.myartsonline.com/doziju.pdfIn PDF document text
    • https://s3.amazonaws.com/pusori/rpg_games_for_pc_offline.pdfIn PDF document text
    • https://s3.amazonaws.com/ziwuvijevo/81093866309.pdfIn PDF document text
    • https://s3.amazonaws.com/xulepiwa/90800781966.pdfIn PDF document text
    • https://s3.amazonaws.com/gekixadonuru/79581760226.pdfIn PDF document text
    • https://s3.amazonaws.com/dikobepibelun/acr_call_recorder_apk_30._2.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_off0000f90d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF90D 5256 bytes
SHA-256: a84d03134c226439eb9108c02b2c4d171958e1f46df0bf4a7baefbffadcf77c7
font_01_sfnt_off00010acb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10ACB 11512 bytes
SHA-256: abe65d9bb8e67702feae2907da6c2b565843ca16b9f2a9a6ae92fab46e0089e2

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