Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd2968c520975876…

MALICIOUS

PDF

104.5 KB Created: 2021-03-19 05:31:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cc361dc2f5c4e605f29499c6efc80523 SHA-1: 69fbff10a1221bc1ffc62844b72da4130da63a30 SHA-256: dd2968c520975876a7baae49363cd9bd2fd1c0c47929c1e0304bb6f480f4f445
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous external links, with one specifically pointing to a suspicious domain related to 'cuisinart coffee maker troubleshooting'. The ClamAV detection and ML classifier strongly indicate malicious intent, likely phishing or malware delivery. No scripts were extracted, but the PDF structure and embedded URLs suggest it's designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://nipisod.ru/wix?keyword=cuisinart+coffee+maker+dcc+1200+troubleshooting
    • https://fezewemekerod.weebly.com/uploads/1/3/6/0/136050953/bixova.pdf
    • http://madamzero.com/atomic_structure_review_worksheet_answerskmk21.pdf
    • http://idealslimitaly.site/150514050273964z.pdf
    • https://somotudodij.weebly.com/uploads/1/3/4/6/134699902/gonadibalagedi_kudopetizobor_wevovin_lugogige.pdf
    • https://fotovotujipibar.weebly.com/uploads/1/3/4/2/134267097/10628d3d3.pdf
    • https://vusexojepaxeva.weebly.com/uploads/1/3/4/0/134096357/kuzimosukuxanutibudu.pdf
    • http://stavki.link/lizusibezujidolixifuzasi3bpu3.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://79e8b926-cc52-4cef-90ae-68e3990d752e.filesusr.com/ugd/694d5d_5c925747b3f64c4e969079e8054d3ec0.pdf?index=true
    • https://uploads.strikinglycdn.com/files/72dc53e8-b473-4108-90fd-5c9b1f58a9e0/english_grammar_exercises_online_hilfen.pdf
    • https://562c2315-396f-49d1-9e45-1236e049cb13.filesusr.com/ugd/ec0012_022129425e1248dd82d33841df19bb33.pdf?index=true
    • https://uploads.strikinglycdn.com/files/f2a36165-e1ce-423f-bd3b-46a64720e172/what_is_junie_b_jones_middle_name.pdf
    • https://923a8ca3-316b-4844-b38f-9bc955ad4852.filesusr.com/ugd/312e0e_3082401737b64a42b7bc20fd6d6ee344.pdf?index=true
    • https://uploads.strikinglycdn.com/files/1254c464-c381-45f5-bfa1-aaac7b62d01d/dewalt_chop_saw_parts_dw718.pdf
    • https://s3.amazonaws.com/gelawiweza/agreement_termination_letter_format.pdf
    • https://507d1b22-ea03-4061-a262-f79425337ca2.filesusr.com/ugd/a374b9_72688578ec024ab9a38a84431bf13eee.pdf?index=true
    • https://29159626-56e2-4eb2-a8c1-eb081f451e44.filesusr.com/ugd/a58502_8538eaf1132a4d86bba14e7f51db5968.pdf?index=true
    • https://4abf464d-34d5-4c80-8de5-e64f30e04530.filesusr.com/ugd/8b3eb5_aa6fb0b2a7b84eddacc48b18278ffcc4.pdf?index=true
    • https://uploads.strikinglycdn.com/files/dc221a01-d9a5-484b-a5c5-309ca5d58a0c/86417104933.pdf
    • https://b56e00ce-d729-42e9-814b-b9a4b194f5ba.filesusr.com/ugd/f6f93f_7a8acb509f794d7499e4ccfbc7f027d4.pdf?index=true
    • https://67a4337f-2b79-4d04-9c1d-2578c80f4945.filesusr.com/ugd/964009_53ee7adab397419fb56d77356b62c2d9.pdf?index=true
    • https://s3.amazonaws.com/fuwenoxuzasila/32123656031.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00014221.bin
eb738162c818c42700d080940654185c6eab4f26bbcf9ad92ee82613e2539f9e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14221 5872 bytes
font_01_sfnt_off000155eb.bin
e86d988abe5b73a9e07817a475386fca2679c9a89407604f4333649d0b2bf32c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x155EB 11532 bytes
font_02_sfnt_off00017d72.bin
9af6fc3bf9d751f70540aea0fa47faa159a3604992cda23d2adcda3ffc5346b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x17D72 16092 bytes

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