Malicious PDF — malware analysis report

Static analysis result for SHA-256 f722a1bf22a0680b…

MALICIOUS

PDF

68.3 KB Created: 2020-12-18 00:41:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 462f05b1dd4677f7b2d1562fbf7450ae SHA-1: bb194ad00ec2f9e598d6e72b2e37a51a3c0f5f09 SHA-256: f722a1bf22a0680bf73a08c989267d64231d31f9bc3b6db5c1d6bf3b9d53d2cf
96 Risk Score

Malware Insights

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

The PDF file was flagged by ClamAV as 'Pdf.Phishing.Trojan' and a machine learning classifier assigned a high probability of maliciousness. The embedded URL 'https://trafffi.ru/strik?utm_term=cissp+cbk+5th+edition+pdf' likely serves as a phishing lure, attempting to trick users into downloading further malicious content or providing sensitive information. No scripts were extracted, but the PDF structure and embedded URI indicate a phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://trafffi.ru/strik?utm_term=cissp+cbk+5th+edition+pdf
    • https://static.s123-cdn-static.com/uploads/4445106/normal_5fd06762e8556.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/34cfffa5-e3b3-481c-b4ed-54a40f3c11a2/safozigimuxowasijakovif.pdf
    • https://static1.squarespace.com/static/5fc5a64340f1034a5cc940e4/t/5fd6439d96ed101a3e3bc71d/1607877534565/95818933261.pdf
    • https://uploads.strikinglycdn.com/files/093f638c-f3c2-41b2-93e5-2e4754d3b56b/how_long_to_beat_amnesia.pdf
    • https://uploads.strikinglycdn.com/files/93b3b6f3-fc7b-44f1-a78b-ed4761e1f5ad/jabcomix_farm_lessons.pdf
    • https://s3.amazonaws.com/dirijazi/create_my_own_cursive_worksheets.pdf
    • https://s3.amazonaws.com/betefowubevat/66442766244.pdf
    • https://s3.amazonaws.com/baxadelefofibuz/nova_killer_quake_video_worksheet.pdf
    • https://s3.amazonaws.com/jotizifime/73539967415.pdf
    • https://static1.squarespace.com/static/5fc2d659d49dd1244740d42e/t/5fce73a30b197a18ad136be1/1607365540800/poki._com_car_racing_games.pdf
    • https://static1.squarespace.com/static/5fc13274cd1e280355d63052/t/5fcbd8809708706f39a71831/1607194753196/mexeruvozunemadajun.pdf
    • https://uploads.strikinglycdn.com/files/a1df3e05-19de-4907-b9a7-2d1e5034a1f5/acquisitions_incorporated_free.pdf
    • https://static1.squarespace.com/static/5fc0bf1b9955c744b53ac36d/t/5fc0e44da97599144e180580/1606476884285/martin_heidegger_what_are_poets_for.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d01f.bin
45d69d6c2310de8a4c9b5e88c3fdab0429ec223f6f7a5f2a3901d1cb3dde064a
pdf-font-stream PDF embedded font (sfnt) at offset 0xD01F 5140 bytes
font_01_sfnt_off0000e19e.bin
885276435e05df1efb21d55562121c253b726478e48a4558cbca4565fdb93b4d
pdf-font-stream PDF embedded font (sfnt) at offset 0xE19E 10224 bytes