Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f111187a9623485…

MALICIOUS

PDF

66.5 KB Created: 2020-11-28 22:19:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: 2841ecebc35c2ae01b02e53e027c1804 SHA-1: 5c7286fc5ef8b750c1097e6956580ba24973763a SHA-256: 6f111187a96234858ae944cdd4177e59c5ffa454b4420f1547820afcb3ab88ac
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://gettraff.ru/wb?keyword=gba%20emulator%20for%20iphone'. This URL is likely used to redirect the user to a malicious site for phishing or to download further malware. The ML classifier also strongly flagged this PDF as malicious, supporting the assessment of a phishing or malware distribution 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
  • 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://gettraff.ru/wb?keyword=gba%20emulator%20for%20iphone In PDF document text
    • https://cdn-cms.f-static.net/uploads/4480170/normal_5fbecc46f0933.pdfIn PDF document text
    • https://fofirajajamide.weebly.com/uploads/1/3/4/6/134643930/kexifipomazilimino.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393358/normal_5fafb8bd4db4c.pdfIn PDF document text
    • https://tamoxukezoge.weebly.com/uploads/1/3/4/5/134585929/wanep.pdfIn PDF document text
    • https://xumusiroti.weebly.com/uploads/1/3/4/3/134321309/xirubatelodik_tetufak_wuvuzikesar.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463532/normal_5fb2823bde0f0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367665/normal_5f8d4e5b41ce8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/1a585616-3341-4d97-b9b2-7ec89078ba2d/74824321929.pdfIn PDF document text
    • https://s3.amazonaws.com/turip/what_is_form_it_204.pdfIn PDF document text
    • https://s3.amazonaws.com/miwolezedubujoz/bolted_joint_analysis_spreadsheet.pdfIn PDF document text
    • https://s3.amazonaws.com/gifiz/article_writing_examples_for_class_11.pdfIn PDF document text
    • https://s3.amazonaws.com/nosepevozux/duxugogo.pdfIn PDF document text
    • https://s3.amazonaws.com/senodiw/voxosozoliwuk.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_off0000c811.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC811 5136 bytes
SHA-256: 574f01b353a609689a6b751a7ffe682b5a384a9ef494df8cc803fd4fab52c57e
font_01_sfnt_off0000d960.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD960 10512 bytes
SHA-256: f3bf3f3ce096ee19458aabcadf1a878d6e431c407022fb1210fee3cc2c256904

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