Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6e3702fb4f2aefe…

MALICIOUS

PDF

76.0 KB Created: 2021-03-25 12:15:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 6c0b4200ebf97f18e1c39796b67d2324 SHA-1: 764cebb3667cd6f03532b94e70db3ceff5cb8bc2 SHA-256: c6e3702fb4f2aefe542afa72642432a726f4468e9ca848c3742ea556f6dbd01b
156 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including PDF_SEO_LINK_FARM and ML_NYX_PDF_MALICIOUS, indicating a high likelihood of malicious intent. The presence of numerous external links, particularly the one pointing to 'jumiwimov.ru', suggests an attempt to redirect users to potentially harmful websites. While no scripts were explicitly extracted, the PDF structure and link farm heuristic point towards a phishing or malicious redirection scheme.

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://jumiwimov.ru/strik?utm_term=education+needed+to+become+a+software+development+manager PDF link annotation
    • https://cdn.sqhk.co/vobevufubito/igdliic/vadebifesonepadovulonew.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462726/normal_603d8f0e8232a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451369/normal_6030175379510.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412899/normal_60515683c05a7.pdfIn PDF document text
    • https://pubabugolutaj.weebly.com/uploads/1/3/2/6/132680974/7a9def3e60b2cb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4443823/normal_6001321bd71d3.pdfIn PDF document text
    • https://cdn.sqhk.co/xolilipedeko/LjfFhxB/31816031962.pdfIn PDF document text
    • https://cdn.sqhk.co/dukapudubi/jhKLhce/13316666682.pdfIn PDF document text
    • https://zuseluxutiv.weebly.com/uploads/1/3/4/6/134686448/4c793d1beb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387061/normal_601dfaf171d8d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382412/normal_5fcd95f09da8d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424405/normal_603cb8408c312.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/8b72eb3d-b0d6-480d-a20a-3f07d29ae80f/vivofit_jr_3_princess.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2a0508de-ea86-4fa2-981b-f5efca7deeee/4560776439.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ebe93b00-4e4c-4929-804e-4709a24e6a15/roland_td-11kv_vs_td-17kv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/da88de91-f14a-4d50-8f92-86f78f8a27ea/are_impalas_reliable_cars.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/98489ffa-a08c-4b8e-ab48-f9ad9c94cb2c/xadabodefowafedan.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/33a25b79-7a03-4a2b-afc2-fae8487ddd0c/simpsons_scientific_method_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9b25f086-e5ec-4071-83dd-27484c5773ef/can_i_use_zoom_on_my_echo_show.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_off0000eca2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECA2 5724 bytes
SHA-256: c1eee124969bd0d3cc6965a9aaefbf52a4f5075bd9d4cbe7ca884fed1bc134a0
font_01_sfnt_off00010025.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10025 10344 bytes
SHA-256: 75a74f696728a31315c348a5b9d5b470a00b3a162f58236dd28f28dd14e10b99

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