Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9eb37b4e01483cc…

MALICIOUS

PDF

72.7 KB Created: 2020-11-18 03:55:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: 367053547c0b323adc19bd76ba4a3fff SHA-1: 79da3bcda6a61f36aca41f7cae0e569740ab34ee SHA-256: e9eb37b4e01483ccffb53f504512618a6a0049dbfef128f4cd3d2810c43b6c6e
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'https://trafftec.ru/123?utm_term=maison+marie+collins', which is likely part of a phishing or malware distribution scheme. Although no scripts were explicitly extracted, the PDF structure and the presence of external URIs suggest an attempt to redirect users to a malicious site, consistent with spearphishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://trafftec.ru/123?utm_term=maison+marie+collins PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4369496/normal_5f8ee15345426.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377912/normal_5f9476645501a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/bb05ea54-5bf4-4306-a6a2-9c38f65c2315/97549123926.pdfIn PDF document text
    • https://s3.amazonaws.com/redegelesibif/brightness_app_windows_10_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/11b05203-a86b-4ec6-9365-dd87e9ba7413/1594188088.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/518bbb5e-4e7b-47d1-ab70-51030acfeca2/dabamojorozozoxugumul.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d9e3382a-3968-4383-b4d3-eeeb89a98ef6/uthgard_midgard_leveling_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/99cda78d-5eff-428b-beb0-e9e52a906d6b/jevuxibedawegawixina.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c591e7c6-89e2-4ec6-9182-361b95e07930/tisiwivigerenupajitifomid.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/df105679-6488-4fee-9039-b01cc4e86716/70648483262.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/33c23edc-d822-43bb-80e9-95cd49c1d858/shawn_worthy_nj_state_trooper.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d3b74a5c-1ff9-4e82-a3af-efc374945e6f/buvuxu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2f8a23a6-88d2-4aaf-88e8-9253d1eb78ae/mamato.pdfIn PDF document text
    • https://s3.amazonaws.com/zeworibuzoza/3000_meters_in_yards.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c6b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC6B7 4952 bytes
SHA-256: b05e4f8e4cf5f32666fec0e810471417c16647b29d327f0480c7d221ed386dff
font_01_sfnt_off0000d780.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD780 12376 bytes
SHA-256: 550e8d7e2ed476c819f78180e9371901ee94ea3306e7989c33bf76d180c932dd
font_02_sfnt_off0000ff45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF45 16204 bytes
SHA-256: a95eff378c135b1ab40d10b3cd1da1bafbc07f86005f57898d079c90d712ddbd

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