Malicious PDF — malware analysis report

Static analysis result for SHA-256 d16d66c183f9bc5a…

MALICIOUS

PDF

70.4 KB Created: 2021-03-05 22:06:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: cf20eecd03a1b20b3cd9c058a3fbffc5 SHA-1: c0df1b5fd0c30ca6aa8fb77b1ac42b5f690e5dd9 SHA-256: d16d66c183f9bc5a3329c4160c7844d85d2ce4f32d564c7b1325e4d850ece521
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://vilenefex.ru/wix?keyword=rational+combi+oven+training+manual PDF link annotation
    • http://wgathering.org/zuwimefgafte.pdfIn PDF document text
    • https://wulafuxuzezam.weebly.com/uploads/1/3/2/3/132302924/tofotexofadej.pdfIn PDF document text
    • http://mifilud.iblogger.org/following_directions_worksheets_for_3rd_grade.pdfIn PDF document text
    • https://pulolated.weebly.com/uploads/1/3/0/7/130740140/1299513.pdfIn PDF document text
    • https://pizotiwedif.weebly.com/uploads/1/3/4/8/134868845/6600d160f8.pdfIn PDF document text
    • https://duxotitur.weebly.com/uploads/1/3/4/5/134596147/20214dd.pdfIn PDF document text
    • http://xudisoda.66ghz.com/aplikasi_whatsapp_aero_anti_banned.pdfIn PDF document text
    • http://genoray.pro/desperate_housewives_scriptfuwer.pdfIn PDF document text
    • https://ludalobupum.weebly.com/uploads/1/3/4/5/134528654/7104432.pdfIn PDF document text
    • https://duxegolukazokun.weebly.com/uploads/1/3/1/3/131398215/midezutozud.pdfIn PDF document text
    • https://tovawifigilad.weebly.com/uploads/1/3/0/7/130776196/fitiguvoset.pdfIn PDF document text
    • https://nonupipo.weebly.com/uploads/1/3/4/7/134767860/9859230.pdfIn PDF document text
    • http://8bitbeardsco.com/flight_simulator_20_xbox_one_release_date43xfs.pdfIn PDF document text
    • http://kfcrabota.ru/89652465728absl0.pdfIn PDF document text
    • https://xijofufakeziti.weebly.com/uploads/1/3/1/3/131380729/1264135.pdfIn PDF document text
    • https://rubexanow.weebly.com/uploads/1/3/5/3/135346757/2015608.pdfIn PDF document text
    • http://boomua.site/fasifavujufenewm6xc4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://d78d2789-9aef-4bfd-88be-9093bec910ef.filesusr.com/ugd/87a178_d20a89bcea934241aeddddfac6c49310.pdf?index=trueIn PDF document text
    • http://juzatapanosuwi.rf.gd/acca_f9_bpp.pdfIn PDF document text
    • https://s3.amazonaws.com/fonazuzixagizir/stafford_borough_council_planning_application_forms.pdfIn PDF document text
    • https://2489a575-72f7-492f-b117-28cfe4a4d2a3.filesusr.com/ugd/d81705_a2dcb7d943464c67a4c1bbafd0a25472.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/forupokisip/23330524880.pdfIn PDF document text
    • https://26c1613e-5d28-4fa3-89cb-3d2c9ab59faf.filesusr.com/ugd/fe83c3_de61d48bb6814236b260222debbe3d0a.pdf?index=trueIn PDF document text
    • http://vuxekote.rf.gd/fedate.pdfIn PDF document text
    • https://s3.amazonaws.com/warapagefasovi/47653782676.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_off0000d534.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD534 5148 bytes
SHA-256: c29b40aa5901b2f3670f2e8a1849d234c4e79653eed23ec542ca71e34ad0cfeb
font_01_sfnt_off0000e6b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6B1 11580 bytes
SHA-256: e8afab88ae9ebf7be491b251c8ce0e2ba11ca093fe4d9e86e4bb0b3a9fcb0753

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