Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a3009e24ce42240…

MALICIOUS

PDF

73.0 KB Created: 2021-01-22 01:49:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 0849a049b196264b4dc238d1dbab61c9 SHA-1: 7438ac6bc40922d008da580644809d1c9418edc6 SHA-256: 3a3009e24ce422409e33a450958efad9ce1de939a409420034f1e543451e180c
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://jacksth.ru/wb?keyword=does%20clover%20take%20apple%20pay PDF link annotation
    • https://cdn.sqhk.co/pasivuzuke/X6hiPXO/47867949998.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474722/normal_5fda2e9453e4c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388276/normal_600762381b86b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452607/normal_60092aac2bff7.pdfIn PDF document text
    • https://cdn.sqhk.co/bexamajuw/idDgcM9/54845378737.pdfIn PDF document text
    • https://cdn.sqhk.co/bitaxukezor/Ojxjbgg/bowflex_black_friday_deals.pdfIn PDF document text
    • https://site-1177333.mozfiles.com/files/1177333/waligepoguvus.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474978/normal_5fd3d73fcb1f4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4487623/normal_6000eacb288ee.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4419195/normal_5fef82f89cd4a.pdfIn PDF document text
    • https://site-1178723.mozfiles.com/files/1178723/car_accident_reporting_centre_mississauga_on.pdfIn PDF document text
    • https://pogiwubuwafax.weebly.com/uploads/1/3/0/7/130775808/nefaxelitipifoj_fokezu_zokosemugom_duderemuped.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4456998/normal_5ff57aaee22d6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367952/normal_5fe3bd3b13cdb.pdfIn PDF document text
    • https://site-1166739.mozfiles.com/files/1166739/modern_tools_mod_1__12_2.pdfIn PDF document text
    • https://cdn.sqhk.co/namaboniki/nhdhcLn/86975222769.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486565/normal_5fca1786c358e.pdfIn PDF document text
    • https://site-1178171.mozfiles.com/files/1178171/xlerator_xl-_sb_hand_dryer_cut_sheet.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000df5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF5B 5152 bytes
SHA-256: 974fb9bcf6f2e1f4d577f883801603f0bf61682e1f83d3cb64a0930757105070
font_01_sfnt_off0000f10e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF10E 11272 bytes
SHA-256: 52d548d214b51237f843cc457457b9a0fa5a060565e8c5a87e1bf0945fb1b395

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