Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e8433781ccfc7d4…

MALICIOUS

PDF

66.9 KB Created: 2021-01-06 13:00:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: c20fe4d686c7cc4ca3f10cdc245f53a8 SHA-1: ec97341fc135a91e296de9df490a0063ab3012ab SHA-256: 4e8433781ccfc7d4cddd7d561ef93b8e89383a4f3dc73c9be3dd71f2406a38c0
156 Risk Score

Malware Insights

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

This PDF document contains numerous external links, many pointing to Weebly-hosted PDFs, suggesting a link farm or phishing campaign. The primary URL, 'https://trafficel.ru/aws?utm_term=aankhen+movie+video+song++hd', is presented in a way that mimics search results, likely to trick users into clicking malicious links. The ClamAV detection and ML classifier strongly indicate malicious intent, likely for phishing or malware distribution.

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://trafficel.ru/aws?utm_term=aankhen+movie+video+song++hd PDF link annotation
    • https://mabobuloxulekev.weebly.com/uploads/1/3/4/6/134692970/1200153.pdfIn PDF document text
    • https://temazojirilezin.weebly.com/uploads/1/3/2/3/132302863/wuxulapitaram-wimalix-gubonudo.pdfIn PDF document text
    • https://dapalirodo.weebly.com/uploads/1/3/1/4/131483520/445360.pdfIn PDF document text
    • https://wodokapiv.weebly.com/uploads/1/3/4/5/134584818/niladum.pdfIn PDF document text
    • https://puduwoziwipaja.weebly.com/uploads/1/3/4/7/134724575/xabokule-gewetetejivu-geruzukat.pdfIn PDF document text
    • https://sebiwijojemobod.weebly.com/uploads/1/3/4/0/134097571/raxezunaw.pdfIn PDF document text
    • https://pepotoxuxomupav.weebly.com/uploads/1/3/1/4/131483830/16509fe34e3b.pdfIn PDF document text
    • https://janepaxe.weebly.com/uploads/1/3/4/0/134097288/vupuneronituge.pdfIn PDF document text
    • https://nalatuzub.weebly.com/uploads/1/3/4/3/134324595/7004689.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/dazovosugev/xebone.pdfIn PDF document text
    • https://s3.amazonaws.com/purixifusipelid/nattamai_meme_template.pdfIn PDF document text
    • https://s3.amazonaws.com/bulolimepol/vans_checkerboard_slip-_on_platform_trainers.pdfIn PDF document text
    • https://s3.amazonaws.com/zerepuzuze/osha_fact_sheet_excavation_safety.pdfIn PDF document text
    • https://s3.amazonaws.com/vebisop/icloud_photos_onto_android.pdfIn PDF document text
    • https://s3.amazonaws.com/jaxesabi/article_rules_in_hindi.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_off0000c93b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC93B 5224 bytes
SHA-256: 1417c613decacfa0d948ab27b28e58f69a2228db84c2ba356ffcfdf95bf5a738
font_01_sfnt_off0000daeb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAEB 10440 bytes
SHA-256: fd04f1b552b283fe2d2c31d95dc9d96042759078180b8a2051792506a2943e62

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