Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7e6b07322463c33…

MALICIOUS

PDF

82.4 KB Created: 2021-05-30 05:14:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e9025e9e47bf08ed476960588c3e1ff2 SHA-1: c5754e92988b5ac556599070eca8a3917e81c2db SHA-256: d7e6b07322463c33bb1ca606fdc4a2d7aa19df9f854950703b4bb7fc29a9511b
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan' and an ML classifier indicating high maliciousness. The presence of a large number of external links, many pointing to PDF files, suggests a link farm or redirection mechanism. One of the primary external links, 'https://bologen.ru/123?utm_term=equifax+credit+report+request+address', indicates a potential phishing lure related to credit reports.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://bologen.ru/123?utm_term=equifax+credit+report+request+address
    • https://padipemoton.weebly.com/uploads/1/3/0/7/130739419/7726235.pdf
    • https://xipesefilugupab.weebly.com/uploads/1/3/0/7/130740566/dofedagitazeso_lobefa_lomabixiroguk.pdf
    • https://nawigabijaku.weebly.com/uploads/1/3/4/5/134599080/6903841.pdf
    • https://viwoxinuzozaxa.weebly.com/uploads/1/3/1/6/131636825/vadegave.pdf
    • https://malabukepi.weebly.com/uploads/1/3/0/9/130969546/130196.pdf
    • https://xabetibupu.weebly.com/uploads/1/3/0/7/130738966/7937502.pdf
    • https://muwigoxafom.weebly.com/uploads/1/3/4/8/134869335/bapifetasakof.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/2179c0fd-5807-464c-a534-2bf562ab97b1/ponisik.pdf
    • https://uploads.strikinglycdn.com/files/f60da2f8-504c-4e80-8759-92c9b4ee4f6f/zipapugilera.pdf
    • https://uploads.strikinglycdn.com/files/eeb5cff4-e0a2-4db4-bcda-85b1bd708f9c/laximapokupoxoxovipusu.pdf
    • https://uploads.strikinglycdn.com/files/c3295d64-80ae-4a60-b87a-4d054f2d76cd/6717116026.pdf
    • https://uploads.strikinglycdn.com/files/2e977504-0743-4845-a32e-35a5f6b60f34/russian_cursive_alphabet_translation.pdf
    • https://uploads.strikinglycdn.com/files/a4f0d97f-5a9e-4662-9bf9-a38a8f8288b7/wezowibuxewuliluvi.pdf
    • https://uploads.strikinglycdn.com/files/4eca0e24-721c-49de-8b51-1f5043ae1f07/gunolamif.pdf
    • https://uploads.strikinglycdn.com/files/4c037f0e-92ca-4662-92dc-2366b83202a2/boragaxabasib.pdf
    • https://uploads.strikinglycdn.com/files/ae131112-3807-4eaa-8797-e10c823dbed1/free_printable_book_report_templates_for_6th_grade.pdf
    • https://uploads.strikinglycdn.com/files/50047617-880d-4193-8521-d6f4b4446c22/what_does_xi_zao_mean_in_mandarin_chinese.pdf
    • https://uploads.strikinglycdn.com/files/6683dfbe-a183-46bf-a42c-92376f100e68/mufepukosufevenotub.pdf
    • https://uploads.strikinglycdn.com/files/16135243-c2b2-49a1-8828-fc51823a7c7e/68059221458.pdf
    • https://uploads.strikinglycdn.com/files/25225889-040f-49e3-80a6-a7b793970c71/how_much_can_you_make_streaming_on_twitch.pdf
    • https://uploads.strikinglycdn.com/files/53760740-c606-4298-bdce-2ab9ffd32a51/18830950453.pdf
    • https://uploads.strikinglycdn.com/files/59d674d4-656c-4cdf-92f4-d339e253cd32/what_is_the_difference_between_solvation_and_heat_of_solution.pdf
    • https://uploads.strikinglycdn.com/files/0ba077de-180d-4e2c-8ae5-dda8f4b2302e/2002_ford_explorer_sport_trac_electrical_problems.pdf
    • https://uploads.strikinglycdn.com/files/608ac4c6-3db3-4359-8b79-5d6b1f54466f/sistema_endocrino_como_esta_formado.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_off0001044e.bin
3283c5bc2aec4ee8d91e5333bb52328746e890d9fed6e6303c348ab71da54985		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1044E 5268 bytes
font_01_sfnt_off00011653.bin
2eaccfae9297e2e8f00006b2e776303993cc5bae6fdfd5d2f33687280e00a43a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11653 10896 bytes

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