Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d4a0ae01897a8a7…

MALICIOUS

PDF

86.3 KB Created: 2021-03-29 08:01:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6c2f6dcf2a20e81017ab45ead27af238 SHA-1: 6b1ebd672c7c7c2e4c9d946174f5e8017bc2357a SHA-256: 9d4a0ae01897a8a781c3992eaa6375af5607e0e759687b4bc64d8fb6d1c26b8a
136 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document was flagged by a machine learning classifier and ClamAV as malicious, exhibiting characteristics of an advance-fee scam. The embedded URL, https://dafemum.ru/aws?utm_term=char+broil+grill+vs+weber, likely serves as a lure to initiate the fraudulent scheme. The document's structure and content strongly suggest a phishing attempt designed to defraud the user.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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://dafemum.ru/aws?utm_term=char+broil+grill+vs+weber
    • http://tifusavegapawuf.mygamesonline.org/74844441229.pdf
    • https://cdn.sqhk.co/zubejavaxuvu/ii6hd9h/98482474447.pdf
    • https://cdn-cms.f-static.net/uploads/4369174/normal_601db707b42a0.pdf
    • https://static.s123-cdn-static.com/uploads/4460954/normal_5fc75a5d891ec.pdf
    • https://cdn-cms.f-static.net/uploads/4498678/normal_602d81e10d1d0.pdf
    • https://cdn.sqhk.co/poxudanefisi/JhjCjjH/votalegatodimilijupo.pdf
    • http://rapoxarawiwalo.sportsontheweb.net/15936766337.pdf
    • http://kifopelidito.mypressonline.com/alfabeto_hebreo_y_su_significado.pdf
    • http://xapiduxirob.mywebcommunity.org/munotozegatilobex.pdf
    • https://cdn-cms.f-static.net/uploads/4379482/normal_5fd77bef0b6b7.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://tumobuwixakeg.atwebpages.com/bijapuwamezolisejaxuw.pdf
    • https://uploads.strikinglycdn.com/files/d823ef94-d10a-4dc4-8f71-77fa4db80d7a/nanipe.pdf
    • https://uploads.strikinglycdn.com/files/f30b6d5d-b373-4b1a-b385-41cd4a3fffd3/ukulele_chords_girl_in_red.pdf
    • https://s3.amazonaws.com/dazifozixawus/proform_995i_for_sale_ireland.pdf
    • https://s3.amazonaws.com/varolexexus/one_of_us_is_lying_characters_janae.pdf
    • https://s3.amazonaws.com/bupaxomu/788953162.pdf
    • https://s3.amazonaws.com/potamotaz/add_and_rename_worksheet_in_vba_excel.pdf
    • https://s3.amazonaws.com/sixenogafopoj/genidazus.pdf
    • http://pasofotamuteper.atwebpages.com/tosuzuxopidet.pdf
    • http://sogivuwe.onlinewebshop.net/68007821604.pdf
    • https://uploads.strikinglycdn.com/files/e2b255aa-e418-4fd4-82bc-9f9f9424f0da/how_to_resolve_team_conflicts_at_work.pdf
    • https://uploads.strikinglycdn.com/files/05ade732-8858-4cde-810f-fd484dcda66f/86070938541.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000114c6.bin
93d1323d072ec2f97401fd4229333ba90b79bff6509caacddbd314c6a65cfa5b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x114C6 5144 bytes
font_01_sfnt_off00012651.bin
348bdb2770389938f075231aaa22d124f85151eed3f418f1365a90873f97dd71		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12651 10992 bytes

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