Malicious PDF — malware analysis report

Static analysis result for SHA-256 3dcf0ffd44962f1a…

MALICIOUS

PDF

65.7 KB Created: 2020-11-26 16:05:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: 033d662d94de5e378b9aeaa9516bc086 SHA-1: 76553c66badd062883e0daeffddce083f41c2cf3 SHA-256: 3dcf0ffd44962f1ae9fa5f1d15692a7c38ac6e5be2a44fe0304f2844fe186360
96 Risk Score

Malware Insights

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

The file is detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. An external URI pointing to 'traffnew.ru' was extracted, suggesting a phishing or malware distribution lure. The PDF structure itself does not contain readable text, but the presence of an external URI is a strong indicator of malicious activity.

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://traffnew.ru/aws?utm_term=lagu+christoffer+nelwan PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4387243/normal_5fb339a4d6839.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408346/normal_5fbf23e1ea323.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/xupimaral/kawaii_home_mod_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/ropidadegaxut/31841723476.pdfIn PDF document text
    • https://s3.amazonaws.com/dumupa/capas_del_modelo_osi_funciones.pdfIn PDF document text
    • https://s3.amazonaws.com/degagaziv/90765576380.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/57de309b-3cff-474a-95fa-310086174206/lazakobamo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7a4140d1-6cab-4276-b96a-76978829bbcc/phrasal_verbs_exercises_printable.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2d9c910c-46c6-4e80-b45b-0b1db31febf4/air_hog_rollercopter.pdfIn PDF document text
    • https://s3.amazonaws.com/kudowo/xudobisa.pdfIn PDF document text
    • https://s3.amazonaws.com/vuforewebub/kobatepuduxoweditoxe.pdfIn PDF document text
    • https://s3.amazonaws.com/kujapomib/bezamafexukovuduwudegez.pdfIn PDF document text
    • https://s3.amazonaws.com/nazekisigiduz/31718620619.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/931afb21-65cc-4c1b-99ea-e8da4c0f2c63/69306028847.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_off0000ae7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAE7C 5176 bytes
SHA-256: 5a694bafcb79ce793b0abc9248319221b072b38004885c28147f337569070e07
font_01_sfnt_off0000c02b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC02B 10280 bytes
SHA-256: 3b5ced73380f8c6e97bc34896b45a592c2ed5fd98d4b5ef70836520396791996
font_02_sfnt_off0000e347.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE347 16140 bytes
SHA-256: 1ffca1ef16be5e2ec436e77f9211a88ad3199dc781cb76600401cc2e2c7dce6d

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