Malicious PDF — malware analysis report

Static analysis result for SHA-256 fee9cf4d4a10a318…

MALICIOUS

PDF

79.7 KB Created: 2021-03-21 10:00:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: a8fdd019c7e7a97e630d5a32d5e4a45b SHA-1: 289b97ed73c10a330b8b2dd230dfd29e20d8aea9 SHA-256: fee9cf4d4a10a31866de16b2bbbec459805a148d9faf358d328e2efc1c2986bc
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, with the primary URL being 'https://ponafet.ru/award?keyword=angina+adalah+pdf'. Heuristics indicate a PDF link farm and ClamAV detected it as 'Pdf.Phishing.Trojan'. The ML classifier also flagged it with high confidence. The presence of embedded URLs and the link farm suggest a phishing or malware distribution attempt, likely initiated via spearphishing.

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://ponafet.ru/award?keyword=angina+adalah+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4450250/normal_60127c8b7bc1e.pdfIn PDF document text
    • https://vojituletakez.weebly.com/uploads/1/3/0/8/130874409/2777066.pdfIn PDF document text
    • https://terifebi.weebly.com/uploads/1/3/2/8/132815785/salerukeromo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482882/normal_603291833e9e8.pdfIn PDF document text
    • https://fosuwelu.weebly.com/uploads/1/3/2/6/132695698/f230427d3e33.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458856/normal_600c9f16bc011.pdfIn PDF document text
    • https://xalekosud.weebly.com/uploads/1/3/5/3/135350534/aeea3839ad2ac.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415519/normal_60404f90e89a1.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/jenisozazewubo/chronicles_of_narnia_lion_witch_wardrobe_cast.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f2052c1b-bf3f-416a-a5f7-3f6571d86b21/68795665146.pdfIn PDF document text
    • https://s3.amazonaws.com/gafedupeba/91766936354.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/733093fa-64bf-4a7f-a010-198f1d53dd17/jozuxusiwepobutezetoje.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/da5031b9-a9c7-4b1d-a2d3-d32ef450c14e/sobuwajofukepegese.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6ce16b06-4245-4578-b5d7-a13407fbf77c/vunawofok.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c82d8a31-afdb-42f5-997a-56b1ca1a35a9/8362846602.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e1b0ba1b-5e34-4144-9201-67253f30acbe/silola.pdfIn PDF document text
    • https://s3.amazonaws.com/xomudufe/how_long_does_it_take_to_get_99_crafting.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_off0000fbba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBBA 5016 bytes
SHA-256: e7732572f67d17d63129ac8944f4aeb55db35b23af0b03bb369055f685a61368
font_01_sfnt_off00010cd1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10CD1 10352 bytes
SHA-256: 4fc76415df19182324d07155c05dd856e69eb23c900fa09d499ae68dc56e85a8

Open this report in the interactive analyzer, or submit your own file for analysis.