Malicious PDF — malware analysis report

Static analysis result for SHA-256 755beb6f2bd6c4df…

MALICIOUS

PDF

66.2 KB Created: 2021-01-03 00:42:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: d83966ffade2a7d34700c40287625799 SHA-1: dd2aaf145300e790d1b6b3ff3490048363bdf892 SHA-256: 755beb6f2bd6c4df039e33295efa65d44aef0c078434799bb76669b46b4b209b
154 Risk Score

Malware Insights

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

The PDF document contains a link disguised as a movie download, which redirects to the malicious URL https://traffmen.ru/123. This URL is flagged as a known malicious redirector. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution.

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://traffmen.ru/123?utm_term=spirit+stallion+of+the+cimarron+full+movie In PDF document text
    • https://cdn-cms.f-static.net/uploads/4384046/normal_5f945e2de9b83.pdfIn PDF document text
    • https://cdn.sqhk.co/xedufoga/j6jYhfm/rocket_music_player_premium_apk.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4500432/normal_5feb174131789.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4478387/normal_5fc3dd0b5a8b0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376354/normal_5f8ef2ddea89b.pdfIn PDF document text
    • https://cdn.sqhk.co/lolitubafo/fgigchi/bebera.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413468/normal_5f9cdf93de731.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421354/normal_5fa8a851c7188.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/janodojivi/vigowukomosazatogunod.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ee42f8c6-6b4f-4ebb-9f54-e5f40243eb11/2858867962.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ba8dd1bb-a6da-4001-bb1b-04905844be97/9755593118.pdfIn PDF document text
    • https://s3.amazonaws.com/lixuzo/thop_tv_apkpure.pdfIn PDF document text
    • https://s3.amazonaws.com/tadovu/super_password_episode_guide_at_wiki.pdfIn PDF document text
    • https://s3.amazonaws.com/towakog/asphalt_8_android_game_free.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_off0000c3a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC3A6 5420 bytes
SHA-256: f6128f79b2708bb3f5d04152b3cef2be5dcd65230fc5eb12c7ab41b7db75c6d5
font_01_sfnt_off0000d5f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5F0 11200 bytes
SHA-256: 76838e25713c4190bb870b71dd53ebe7447706cea7426f5eb1f31fb494c5dfc3

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