Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d9d0f2a2052a937…

MALICIOUS

PDF

59.9 KB Created: 2020-12-15 10:48:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 83ee5b8aeee999c410b23d95dd0bb814 SHA-1: 1939212ed7eb4cd547618f076a2e26807c956293 SHA-256: 6d9d0f2a2052a93769f3454d47456bd6fa9ddbc7ca6650fa0ef54cde06396b31
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that leads to a suspicious domain, identified by ClamAV as Pdf.Phishing.Trojan. The ML classifier also flagged this PDF with high confidence. The document body, though heavily obfuscated, appears to be related to a product search, suggesting a phishing or scam attempt.

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://traffine.ru/123?utm_term=honeywell+water+heater+gas+control+valve+replacement
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static1.squarespace.com/static/5fce34e9790d063a90a99d52/t/5fd5fe3e96ed101a3e35b989/1607859775515/fitted_sheet_queen_canada.pdf
    • https://s3.amazonaws.com/tiniruru/airport_extreme_router_manual.pdf
    • https://uploads.strikinglycdn.com/files/7f9eb313-b5cb-4af0-8b8d-d075ed42fa67/phoenicians_in_america.pdf
    • https://s3.amazonaws.com/nazekisigiduz/us_billboard_top_100_songs.pdf
    • https://uploads.strikinglycdn.com/files/b07af445-093c-4516-b4cc-b6c059933101/vuwuzejiwaduleku.pdf
    • https://s3.amazonaws.com/mujevubutukoxu/amazon_mobile_app_free_for_android.pdf
    • https://uploads.strikinglycdn.com/files/da32fdd4-2029-4fe6-93d1-7b994ee851dc/xumurivelamoxi.pdf
    • https://uploads.strikinglycdn.com/files/485f6888-e254-43d4-a29e-62f872cfa54e/15450807925.pdf
    • https://uploads.strikinglycdn.com/files/b0bf3870-3315-431c-823f-8ce4063ef6c1/the_complete_software_developers_career_guide_drive.pdf
    • https://uploads.strikinglycdn.com/files/51d68680-b80c-4f4f-8ce3-1909f0f97202/kant_dizisi_full_izle.pdf
    • https://s3.amazonaws.com/mafavuzenoliki/xazomufiwarosuwodoxatonib.pdf
    • https://s3.amazonaws.com/vonutavekip/luxaxuriwasazewilinanu.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_off0000af18.bin
42da6c30665894abb2ef731e60b73be94240fd65d234e65bfd8fae98a0de09de		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAF18 5564 bytes
font_01_sfnt_off0000c1fd.bin
1bb801a0bcc15de377e7c16714f44648bb311539bd258242c4e9eb4090cde0da		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC1FD 9696 bytes

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