Malicious PDF — malware analysis report

Static analysis result for SHA-256 f58304a561d3e29e…

MALICIOUS

PDF

67.0 KB Created: 2020-11-17 01:21:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: d5e8f876b14bc1b815096f412016e429 SHA-1: b66222686d9a848b30bfbae390b75ee128dfe25e SHA-256: f58304a561d3e29ecfd553f093355e47475596cb5e6a5aba37d25f5e11ca2991
194 Risk Score

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://gettraff.ru/wb?keyword=yaariyan%20baarish%20song%20lyrics In PDF document text
    • https://cdn-cms.f-static.net/uploads/4388814/normal_5fa1e15911eea.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490269/normal_5fac04b8405e5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367278/normal_5fa42d7779d65.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414502/normal_5f98907d9354a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389104/normal_5f91d91211ad7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378170/normal_5fa59bb9b004c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483349/normal_5fb260214772b.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/73dfa675-db67-494d-a3f3-7aca0212f836/wemadegafodesabo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/996fd439-56f1-4684-bad8-507e10cf3e85/xopafeborobipotenamekepig.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1254f207-9a89-49ef-b4e4-7bd696228e9b/hill_climb_racing_2_hacks_for_kindle_fire_hd.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/138b2de2-edba-44e4-ba99-ff631f80465c/93990412564.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c82aab57-b782-43f6-bbf7-be48f2c08c46/smart_car_fortwo_service_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5d3faaac-2a57-491d-b2d4-dc54f5ab2b14/vuwezedubegol.pdfIn PDF document text
    • https://s3.amazonaws.com/wilugugo/financial_accounting_and_management_notes.pdfIn PDF document text
    • https://s3.amazonaws.com/latufenaw/jessica_howard_midi_maxi_dresses.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/36d7b9ca-43ae-4b35-9342-599b06a31752/wijofanutimenomozewomoret.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_off0000c981.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC981 5264 bytes
SHA-256: 42b3862b3084dfc704818c155e3c28196fdf13a2e436e8c4eda96d5bea910e66
font_01_sfnt_off0000db71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB71 10532 bytes
SHA-256: 9ec2782a2f7d720792a39f2de6b5dc34952904e315683f6c806e871ae85021be

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