Malicious PDF — malware analysis report

Static analysis result for SHA-256 afcb062110a54035…

MALICIOUS

PDF

64.8 KB Created: 2020-12-17 18:22:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 557e06c8fab4fb26d7d427afc1079162 SHA-1: 9ec5528b21096e59c25e262695bb20213a174795 SHA-256: afcb062110a54035a83215c977287968a075accdbee7086d068cf14f832d68cb
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 'trafffe.ru', which is a strong indicator of a phishing or malware distribution attempt. The document body, though heavily obfuscated, appears to reference a song title, likely as a lure to entice users to click the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://trafffe.ru/aws?utm_term=carnival+of+rust+song PDF link annotation
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/3762352d-32a4-4df0-8969-2daa158016de/gold_gym_inversion_system.pdfIn PDF document text
    • https://s3.amazonaws.com/wemupajese/adestramento_inteligente_alexandre_rossi_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/703efbc6-cc65-4a60-b3e4-6ee7f2556f11/segokagin.pdfIn PDF document text
    • https://s3.amazonaws.com/vososasoxumete/friend_zone_movie_hd.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f80652e8-890e-4b04-af0f-5e53595ed3f8/64745080868.pdfIn PDF document text
    • https://s3.amazonaws.com/jajuzasalikirut/unblock_website_vpn_browser_apk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/52c0ac61-3e22-4e99-875c-c4bff9061c98/rowoniganolofekuforuvefo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/074dcc00-7851-4caf-9675-26ba628c9785/kusasoxurap.pdfIn PDF document text
    • https://s3.amazonaws.com/felasorarabipis/dekazapavamogetefeto.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fe0977a3-b83c-48ba-8eb0-2862acfe8a3d/foundations_of_earth_science_6th_edition.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c300.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC300 4900 bytes
SHA-256: 6be29b2678b10471bdba7a906b75c2c4fdf7994006fe1263a4e74fbf1179df1c
font_01_sfnt_off0000d3c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3C4 10180 bytes
SHA-256: 68f559d4076865a1f0455cbac1fd4ab6b0dc63c2fc9ca608c280704a99cae91d