Malicious PDF — malware analysis report

Static analysis result for SHA-256 c49e660a8d7e9cd9…

MALICIOUS

PDF

69.6 KB Created: 2021-01-11 13:44:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 47949ee5abc4edc813fa29a96757131e SHA-1: ef1356daf27ce6623526717f091eebc019c2e5a8 SHA-256: c49e660a8d7e9cd9e07adfd1e2f229996c4c13cca593370853896e0ff7f146c9
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URI pointing to a suspicious domain, trafffe.ru. This domain is likely used to host a malicious payload or redirect the user to a phishing page. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan.

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/123?utm_term=msi+gp72+leopard+pro-002c PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4460706/normal_5fb80933e8976.pdfIn PDF document text
    • https://cdn.sqhk.co/zudilubal/YibgfQD/rejenil.pdfIn PDF document text
    • https://cdn.sqhk.co/netesatova/R4slevD/led_lights_color_changing.pdfIn PDF document text
    • https://kinigapiluxuke.weebly.com/uploads/1/3/4/8/134863840/zewoxupuso_kusanufe_nanusoda_nokode.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4502268/normal_5fac2781d9df8.pdfIn PDF document text
    • https://zuzolavilasobin.weebly.com/uploads/1/3/4/5/134523903/bilusameti.pdfIn PDF document text
    • https://cdn.sqhk.co/lobitukojuro/UgenHja/21856322534.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/tanikanaw/advanced_probability_theory.pdfIn PDF document text
    • https://s3.amazonaws.com/fedufiporara/kexamebenegaw.pdfIn PDF document text
    • https://s3.amazonaws.com/jotizifime/ejercicios_de_caida_libre_y_lanzamiento_vertical_resueltos.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c7d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC7D9 5632 bytes
SHA-256: bee4b2c3a097effbbd62b83adabcdb7672224b3ec8c1439b8f8c6c0dbae074a6
font_01_sfnt_off0000db30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB30 14476 bytes
SHA-256: 052a23405d9ae13b7b6f3112631a317e011fb7494963321085dde4dabb0fc0b3

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