Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d5408431b718922…

MALICIOUS

PDF

77.0 KB Created: 2020-12-17 19:15:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0b4d22912fc196a67807c33f3e7470f4 SHA-1: 5cf053584b12ccf7075421fafcab18396c393583 SHA-256: 7d5408431b71892242a3764427af59b10f22bfdb4a1401a12c5144c842bd3963
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. It contains an embedded URI pointing to 'trafftec.ru', which is likely a phishing or malware distribution site. The document body appears to be obfuscated or corrupted, but the presence of the external URI is a strong indicator of malicious intent, likely to redirect the user to a harmful resource.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://trafftec.ru/strik?utm_term=you+still+love+me+by+tasha+cobbs
    • https://xomowozijirogap.weebly.com/uploads/1/3/4/6/134667332/9665531.pdf
    • https://boretenewur.weebly.com/uploads/1/3/1/4/131453221/sagaz.pdf
    • https://vubinejenifa.weebly.com/uploads/1/3/4/4/134444695/6222731.pdf
    • https://fekudumubaf.weebly.com/uploads/1/3/2/6/132681201/9777323.pdf
    • https://gitapobukelagij.weebly.com/uploads/1/3/4/2/134266265/4450885.pdf
    • https://fagisidide.weebly.com/uploads/1/3/2/6/132682833/fegezinujowopetini.pdf
    • https://pozosukezogi.weebly.com/uploads/1/3/4/3/134386022/wagiporuw.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/xanunafojuloki/jutobisu.pdf
    • https://s3.amazonaws.com/mewezekilafef/town_of_coupeville_jobs.pdf
    • https://s3.amazonaws.com/tadovu/22566931072.pdf
    • https://s3.amazonaws.com/tipikaxe/britannica_learning_library.pdf
    • https://uploads.strikinglycdn.com/files/9ff296c3-f386-4ff4-82bd-986af3b0d5ec/92830600067.pdf
    • https://s3.amazonaws.com/punurum/ledinixipogitenikof.pdf
    • https://s3.amazonaws.com/polexebuj/39362616500.pdf
    • https://uploads.strikinglycdn.com/files/1b29bfe5-27e4-45f3-a911-d48126b84adc/51331026228.pdf
    • https://s3.amazonaws.com/nimuwet/mozukudolu.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c581.bin
96280c51bdba2f7bd3afeddc84a2c465632d1088eb00e635a3aa0e672d753155
pdf-font-stream PDF embedded font (sfnt) at offset 0xC581 4980 bytes
font_01_sfnt_off0000d687.bin
40c736f539d251a202d7a4686ecfb0301d3203cf49c8278d924c7f459d765210
pdf-font-stream PDF embedded font (sfnt) at offset 0xD687 10272 bytes
font_02_sfnt_off0000f9bb.bin
c4ec7a5f953f48b9e05e3099d793405a009d028b9f392c14efc588c1065fba12
pdf-font-stream PDF embedded font (sfnt) at offset 0xF9BB 18636 bytes
font_03_sfnt_off0001162f.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34
pdf-font-stream PDF embedded font (sfnt) at offset 0x1162F 4324 bytes