Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea7a16c87215c0b9…

MALICIOUS

PDF

74.0 KB Created: 2021-02-04 15:27:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 5cf51133f84020ea555c01f5c96c696a SHA-1: 679166d63664477f02a6ee57c0deba12488f4f9b SHA-256: ea7a16c87215c0b9e1d2db100143ad8b0ab0c847ac9b31eb4c9a6f89c0167448
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://jottigo.ru/aws?utm_term=driver+debrief+template PDF link annotation
    • https://cdn.sqhk.co/mepofazobi/YmXQfnx/vipevamopagepejomukuk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366055/normal_5fe8e836e2985.pdfIn PDF document text
    • https://cdn.sqhk.co/jesotipo/cKrx7gj/65313162860.pdfIn PDF document text
    • https://cdn.sqhk.co/turaxulefa/1hcYPhb/redskins_game_on_youtube.pdfIn PDF document text
    • https://cdn.sqhk.co/sugifila/osaXhgr/tazidutonabivuvosunasepaf.pdfIn PDF document text
    • https://cdn.sqhk.co/gokovolasula/ic8iegi/76527843005.pdfIn PDF document text
    • https://tasototunone.weebly.com/uploads/1/3/4/7/134755659/3281d1e749253.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425229/normal_600e6626d4e8c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4500453/normal_5fc68ac913276.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/mipizaju/action_movies_2018_tamil.pdfIn PDF document text
    • https://s3.amazonaws.com/bogijexu/77484861081.pdfIn PDF document text
    • https://s3.amazonaws.com/jefazaxal/michigan_court_rules_answer_to_complaint.pdfIn PDF document text
    • https://s3.amazonaws.com/lezopobigeza/dirumodavapi.pdfIn PDF document text
    • https://s3.amazonaws.com/wazorixekunafob/99533115724.pdfIn PDF document text
    • https://s3.amazonaws.com/vavabi/15803038405.pdfIn PDF document text
    • https://s3.amazonaws.com/vojapu/single_point_cutting_tool_angles.pdfIn PDF document text
    • https://s3.amazonaws.com/nuxulikiwab/oak_laminate_veneer_sheets.pdfIn PDF document text
    • https://s3.amazonaws.com/lukepepe/simple_multiplication_and_division_worksheets.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_off0000e6a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6A2 5208 bytes
SHA-256: 3515a2405d8b0f60b3e22552d432d025869398ef3053042402c675b7b312d751
font_01_sfnt_off0000f843.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF843 10192 bytes
SHA-256: 016677b0daf8781c1c9836c8ec1171a7108e0082aea66a7c9af959c179a76012

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