Malicious PDF — malware analysis report

Static analysis result for SHA-256 f4169e1e115e0a40…

MALICIOUS

PDF

64.2 KB Created: 2021-01-12 20:41:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: ac57de6ce312c59c137704862bea0b7a SHA-1: 64c57e70a9ef7638e81a9acb4ea6295e5798ddf1 SHA-256: f4169e1e115e0a409fa92c097e48a18164f984fd951a9e578ddfcc5f16a24d76
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, with a high risk score. It contains an embedded URI pointing to 'traffking.ru', which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, contains text that suggests a lure related to a 'Heil furnace manual'. The presence of embedded URLs and the overall malicious verdict strongly indicate a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://traffking.ru/123?utm_term=heil+furnace+manual PDF link annotation
    • https://cdn.sqhk.co/wotezowedo/R0K7ZPE/dovajisewibixa.pdfIn PDF document text
    • https://site-1175063.mozfiles.com/files/1175063/68113263010.pdfIn PDF document text
    • https://site-1179301.mozfiles.com/files/1179301/41531912945.pdfIn PDF document text
    • https://site-1168155.mozfiles.com/files/1168155/11778900812.pdfIn PDF document text
    • https://site-1181076.mozfiles.com/files/1181076/40129075042.pdfIn PDF document text
    • https://cdn.sqhk.co/sixepatexup/bqibVgf/522978754.pdfIn PDF document text
    • https://site-1168029.mozfiles.com/files/1168029/58849558628.pdfIn PDF document text
    • https://site-1178025.mozfiles.com/files/1178025/extreme_car_stunts_3d_unblocked.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411491/normal_5fdf672475f37.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481671/normal_5ffd1bd938936.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/sivanira/88159836876.pdfIn PDF document text
    • https://s3.amazonaws.com/pokorevalaxex/lake_louise_ski_area_snow_report.pdfIn PDF document text
    • https://s3.amazonaws.com/nunakixuma/pauper_bogles_sideboard_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/rijaliwiguvex/vejekobedefirufawilo.pdfIn PDF document text
    • https://s3.amazonaws.com/falufusu/65796317168.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b32e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB32E 4500 bytes
SHA-256: 267149bf71ef9cfadc6b3dddd1909699ecd6369029c3dc45a7e15e3d71f7bd8f
font_01_sfnt_off0000c247.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC247 10084 bytes
SHA-256: 3ddad9a8f2c270f4550526af4c53996dd061ea7d5da1d2e41e8dfa4db64fc7ab
font_02_sfnt_off0000e4cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4CF 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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