Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6ab29a069f4f4b1…

MALICIOUS

PDF

68.8 KB Created: 2020-11-14 16:31:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b3dc32cb0afe80066d887757df34c8f7 SHA-1: 13a93f2b4dc803276f420fcd8af44f8311d54746 SHA-256: f6ab29a069f4f4b1861e4f64bbeb51e39113f15af3d477cf0cf29cf6b400dda5
96 Risk Score

Malware Insights

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

The file is a PDF document flagged by ClamAV and an ML classifier as malicious. It contains an embedded URI pointing to 'traffine.ru', which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, suggests a lure related to an 'Animal Farm study guide'. No scripts were extracted, but the presence of external URIs and the malicious classification strongly indicate a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://traffine.ru/strik?utm_term=animal+farm+study+guide+teacher%2527s+book
    • https://cdn-cms.f-static.net/uploads/4372086/normal_5fa5f4af654db.pdf
    • https://cdn-cms.f-static.net/uploads/4421342/normal_5f9a8f032ffe6.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/d0ad8c2c-dc37-43de-935b-e349d045834c/jujanogukasasatavar.pdf
    • https://s3.amazonaws.com/fonibinaraj/9._3_graphing_quadratic_functions_answers.pdf
    • https://uploads.strikinglycdn.com/files/9390b0eb-dcd0-4dfa-ad42-af682818595b/pavuwebugir.pdf
    • https://uploads.strikinglycdn.com/files/99a55cc1-f22a-4bc7-9331-12f6b75b3f7a/fafab.pdf
    • https://uploads.strikinglycdn.com/files/e744d63b-a85c-49a5-b3a5-ad8a9472c2bb/70340025757.pdf
    • https://uploads.strikinglycdn.com/files/8e7f1e4a-ab02-4b42-8412-a9d2193bd5dd/rezuralezasepunoputubu.pdf
    • https://uploads.strikinglycdn.com/files/e245d359-8d93-4d99-b626-672c22ef1217/sauvegarder_sms_sur_ordinateur.pdf
    • https://uploads.strikinglycdn.com/files/059d380a-4049-4c0b-9a57-c46405899271/the_who_behind_blue_eyes_lyrics.pdf
    • https://s3.amazonaws.com/jitimesolagun/spy_camera_apps_free.pdf
    • https://s3.amazonaws.com/liwafo/fabumabifozuwekutilo.pdf
    • https://s3.amazonaws.com/bezegoluzose/15940080928.pdf
    • https://s3.amazonaws.com/vonuxagupeduze/64569883793.pdf
    • https://s3.amazonaws.com/vazisi/civil_rights_movement_worksheets_high_school.pdf
    • https://uploads.strikinglycdn.com/files/a3cc8a3a-77c8-4602-bfbf-b76c8cc7bed7/34332260120.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_off0000d05a.bin
d7944139cac80342fdfc203cea6c59a18d2f00165ac7ac5e873e72d185144c47
pdf-font-stream PDF embedded font (sfnt) at offset 0xD05A 5764 bytes
font_01_sfnt_off0000e3df.bin
b68c311bad8aa18a625a0a8c7754df6b94a3021e2aac09e3d812face71855db6
pdf-font-stream PDF embedded font (sfnt) at offset 0xE3DF 10116 bytes