Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ee0ad938b60fdf1…

MALICIOUS

PDF

71.9 KB Created: 2020-12-18 07:32:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 44d3345465a89bbb4c0b812c2227f527 SHA-1: 9d9725b00ae10c9ffd5e13765d4191d320626499 SHA-256: 0ee0ad938b60fdf1f150fa5ffcbaa73a1aeb9a0b1a35b30a13142957645d8dda
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 4

  • 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://trafffe.ru/strik?utm_term=8+input+nor+gate+ic PDF link annotation
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/11ad9f34-760d-4834-86fe-bea2ae639eb6/.pdfIn PDF document text
    • https://s3.amazonaws.com/jovekus/anatoma_y_fisiologa_del_pncreas.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbcf2d364a3cc4058a39759/1606218452080/mix_rikku_final_fantasy_x.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf66b6f3de5e49b55c895f/1606379191235/nerve_cells_coloring_worksheet_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/001e8218-5d84-4ef6-b816-b1c5e8071b65/16054636112.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0d7ac403f5353fd956fc5/t/5fc236313485235c86108ef8/1606563378262/t_mobile_no_credit_check_reddit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a4591a26-5298-420b-b581-166d45c5e0cc/93128678491.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/56225669-e07e-4422-ba24-e84d8dfb7608/lufadiloxexilumu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fa51f48f-e696-4c42-8aac-cebf98d5e1dd/64360973877.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/088dee6b-36da-41e3-8b6e-383b966c62c5/kepifuzozejopodedebivaj.pdfIn PDF document text
    • https://s3.amazonaws.com/tuzamada/dezanuwafitasixoko.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc4ef5cbe9b69395124a64b/t/5fc605acbc819f1cf4a748bd/1606813100857/2582095786.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000ea02.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0xEA02 17848 bytes
SHA-256: a138b1bf3e49c7b0e55bcfb50a60fafb2cb3ea0da7cba64e12a4a7d47cf5f664
font_00_sfnt_off0000b587.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB587 4872 bytes
SHA-256: 2697a0f276009f388a82b5fec3b08b5faa8bc4572244a0da3e31e78c5d02d153
font_01_sfnt_off0000c619.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC619 10624 bytes
SHA-256: ff5e3fc6bfa8aaf44b7f1d3cfd06b6fa4a885777e8f06efe1fb5ae9c28b80a2b
font_03_sfnt_off000104c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104C5 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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