Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b7894bf18525d9e…

MALICIOUS

PDF

91.3 KB Created: 2020-12-24 06:07:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: e87f59088081e6f546be708f7c190442 SHA-1: dbd9e932156d312525d96407d273ca27287d4e85 SHA-256: 0b7894bf18525d9eb84bf9ee3cbc43a0fb80de360ca6a035d642f783f4889c71
182 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link pointing to 'traffmen.ru'. This, combined with ML classification and ClamAV detection, strongly indicates malicious intent. The document likely uses social engineering tactics, such as a visual download button, to trick users into clicking the malicious link, which is a common spearphishing attachment technique.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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.
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/strik?utm_term=anywhere+vr+ps4+review In PDF document text
    • https://cdn.sqhk.co/dekaroku/383ic5p/fonerawosorifosotuwu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365619/normal_5f8b5927df0a8.pdfIn PDF document text
    • https://cdn.sqhk.co/lasesekov/fjbijge/buddypoke_app_download.pdfIn PDF document text
    • https://cdn.sqhk.co/gumoxixo/jhAihhg/drawing_points_lines_and_planes_worksheet.pdfIn PDF document text
    • https://cdn.sqhk.co/mepetiruzi/bhwejh6/twisted_sisters_show_sarra.pdfIn PDF document text
    • https://cdn.sqhk.co/bufutoje/LgiY8hg/mimutetofipaf.pdfIn PDF document text
    • https://cdn.sqhk.co/wemofisejaf/RLOVCBf/voice_changer_recorder_app_apk.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/levumoduf/60835817859.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fa00b851-55fa-4f9e-be86-a0c6d26479df/roblox_fe_admin.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e7ad829c-f43c-42ba-9cba-b5455122514a/wupiwosuzone.pdfIn PDF document text
    • https://s3.amazonaws.com/boxalewijim/brave_soul_jeans_size_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/gasodamuza/webutegufu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3384fbe9-a501-45cb-93f7-d77fd9b514c7/65713831934.pdfIn PDF document text
    • https://s3.amazonaws.com/somamere/sovejupegebo.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_off0000cb58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB58 30528 bytes
SHA-256: a58120fb7c334948345a9c85a30a6cd1aa8f7323814dd0f1f496f46a9e8d44b5
font_01_sfnt_off00012a3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12A3D 4996 bytes
SHA-256: 80963cfab27eaa7685418a4ed7c927225662bb599fbeccfc127716e35b7d2b7b
font_02_sfnt_off00013b61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13B61 10860 bytes
SHA-256: ab27c82ab563ced4ccedef222a21eb3c6ad2d9ad9033820504c890a077a68790

Open this report in the interactive analyzer, or submit your own file for analysis.