Malicious PDF — malware analysis report

Static analysis result for SHA-256 6382e218ece1c924…

MALICIOUS

PDF

301.2 KB Created: 2021-01-14 13:13:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: 173610d15867d463e2143a7165e7cda8 SHA-1: 695b80f313a8a650c5fb57ebe2dc8129d4f00458 SHA-256: 6382e218ece1c92470d49f7d7d326a770d35564ee4f83ee5f94561d8259ef871
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'trafffi.ru', which is likely part of a phishing or malware distribution scheme. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect users to a malicious site, potentially for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9819

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://trafffi.ru/aws?utm_term=esc+2016+lipid+guidelines PDF link annotation
    • https://ligegumipiwefu.weebly.com/uploads/1/3/3/9/133999845/136697.pdfIn PDF document text
    • https://cdn.sqhk.co/jagapifa/Lz2jdIy/21369559716.pdfIn PDF document text
    • https://gikexirubunos.weebly.com/uploads/1/3/4/6/134644737/xuvufewibimukiluruzi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4371261/normal_5fee183259512.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488572/normal_5fd2dd9bd4671.pdfIn PDF document text
    • https://cdn.sqhk.co/janonaset/4207o2x/ocoee_high_school_address.pdfIn PDF document text
    • https://cdn.sqhk.co/pivokazi/1qf2jUe/jajipexorobofejavutevaz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389793/normal_5fda5659ab5e8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482218/normal_5fe05c36c4bb5.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/resisuna/bitlocker_drive_encryption_windows_8._1_free.pdfIn PDF document text
    • https://s3.amazonaws.com/fulosobezur/gakovo.pdfIn PDF document text
    • https://s3.amazonaws.com/mokixetat/genetic_code_table_answer_key.pdfIn PDF document text
    • https://s3.amazonaws.com/buganabowumujef/playlist_script_font_mac.pdfIn PDF document text
    • https://s3.amazonaws.com/fasomusogapovi/bosch_fridge_manuals.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_off0004528c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4528C 5372 bytes
SHA-256: a40337ecd43f78a48534873719990ff91124dbee295c19b15ea1b439d07243ce
font_01_sfnt_off000464fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x464FC 13256 bytes
SHA-256: 542aafeaa434edecf457e4221439c13072deb8c1a2d97179ecfb23dc97229ecc
font_02_sfnt_off000490bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x490BB 16148 bytes
SHA-256: 49436f94d5abf10ca6af8af9848174aab82dfe7bc58a5146411d238fd5c76648

Open this report in the interactive analyzer, or submit your own file for analysis.