Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c451c1b2599f7c2…

MALICIOUS

PDF

72.0 KB Created: 2020-11-13 20:16:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a307c62d53cdee8ff7e289df254b922e SHA-1: df351e775408a1a7ae6dc4499704bd809f450cf2 SHA-256: 9c451c1b2599f7c2ff3809921d25165a86697f4d23ff5378820e667283c63222
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that redirects to a malicious domain, likely for phishing or malware distribution. The document body, though heavily obfuscated, contains text related to 'Juegos pkg full ps3', suggesting a lure for game-related downloads. The ML classifier and ClamAV detection strongly indicate malicious intent.

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://traffset.ru/strik?utm_term=juegos+pkg+full+ps3
    • https://cdn-cms.f-static.net/uploads/4384307/normal_5f94e879d991f.pdf
    • https://cdn-cms.f-static.net/uploads/4366335/normal_5f99cd75bd06a.pdf
    • https://cdn-cms.f-static.net/uploads/4387810/normal_5f97662d9ec6e.pdf
    • https://cdn-cms.f-static.net/uploads/4391001/normal_5fa1af2c7f28e.pdf
    • https://cdn-cms.f-static.net/uploads/4368505/normal_5f8e1319eeb7c.pdf
    • https://cdn-cms.f-static.net/uploads/4449998/normal_5fa84847a1253.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/0640b812-de14-4c9c-b71d-f6562f4a7ff3/telolokamidafejiwoji.pdf
    • https://uploads.strikinglycdn.com/files/6442ab09-c84f-4cec-8ff6-754d42af80b1/traceable_alphabet_letters_for_presc.pdf
    • https://uploads.strikinglycdn.com/files/d2b25718-ca2d-4f75-ac8b-3309683a0437/78521136089.pdf
    • https://uploads.strikinglycdn.com/files/0dc3d3d8-0889-4141-b19d-860267f2a4ff/rci_2950_mods.pdf
    • https://uploads.strikinglycdn.com/files/8590c22c-df72-410c-9922-25b8d9c2f0bf/nusuvomiri.pdf
    • https://uploads.strikinglycdn.com/files/ea3df360-12b3-44f2-b81f-8b4f0ae3fc0a/digiloom_app_for_android.pdf
    • https://uploads.strikinglycdn.com/files/69c7935e-f353-440a-8aa9-1b4718671575/solijibekepogofo.pdf
    • https://uploads.strikinglycdn.com/files/5bf044bb-9a5f-4ad5-8b54-98634b972248/pijibopubekokifiju.pdf
    • https://uploads.strikinglycdn.com/files/a92d809d-6062-44af-ada6-fc12746c58ae/bibamuwolekudiligaf.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_off0000c9bf.bin
e7bb71d8642c0b20260996ac14ac465ccc07d4162c196e6c0d2fbc4eb319a5ec
pdf-font-stream PDF embedded font (sfnt) at offset 0xC9BF 4980 bytes
font_01_sfnt_off0000dadd.bin
a481eadd5e6b983535935c9b214823e90b2c6cc1014b30dd47b7d6f9d2d85cb7
pdf-font-stream PDF embedded font (sfnt) at offset 0xDADD 10412 bytes
font_02_sfnt_off0000fe69.bin
e9fe716c2abc985b12a899a49d5539e4e8be1b56d50c083b30290d85a2a7c848
pdf-font-stream PDF embedded font (sfnt) at offset 0xFE69 16092 bytes