Malicious PDF — malware analysis report

Static analysis result for SHA-256 17b93380a77a2afd…

MALICIOUS

PDF

63.0 KB Created: 2020-12-22 14:36:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 0290b8149477e9ab238366edfe03099a SHA-1: 6560ffc340efb308267b9210e2a7cebc17de14d3 SHA-256: 17b93380a77a2afdcd2318fe09b118e7f631c6181ca3457dc78ed7b9ace66650
154 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, traffking.ru, which is disguised as a car manual. This indicates a phishing attempt to redirect the user to a malicious site. The ML classifier and ClamAV also flagged this file as malicious, supporting the phishing conclusion.

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://traffking.ru/aws?utm_term=toyota+aqua+2013+manual In PDF document text
    • https://static.s123-cdn-static.com/uploads/4503033/normal_5fe1a5cd72fb0.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fdfcd3607af9e0e1603aa2b/t/5fdfe03ef23a830a59cea025/1608507455156/amoled_full_form.pdfIn PDF document text
    • https://s3.amazonaws.com/zasepo/alex_rider_scorpia.pdfIn PDF document text
    • https://s3.amazonaws.com/doxifuba/64225323249.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c67ac4a7-746a-456e-81a4-29f9800cf890/38269199087.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/63fe441d-b55e-4207-9c55-296eecf50c79/guduzo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a1ba065f-16ae-4fb1-8dde-95e88bd29816/chicago_title_and_trust_locations.pdfIn PDF document text
    • https://s3.amazonaws.com/jivala/98511714270.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc34462ab79f442f238dc9b/t/5fd61ef8034a586a4f3b4903/1607868152982/performing_arts_jobs_brisbane.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bc345f83-1ca9-42bc-8a05-cbf126bc6a51/free_download_facebook_application.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/13053bc3-be20-465f-bbdb-79909a0d7623/66864342833.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ec1004c1-7bc9-41f3-9732-366770da0c9e/wopenilerosudedawujiz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a4a3b296-5691-49e0-8c76-e2fee83e6b84/pelupibijodexam.pdfIn PDF document text
    • https://s3.amazonaws.com/jipowumat/smile_book_raina.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_off0000bc38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBC38 5224 bytes
SHA-256: 370f15ca1d1dac1f0f3b9efc71e02c683390fad542f1ab9b19582a84f4db3017
font_01_sfnt_off0000ce05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE05 9656 bytes
SHA-256: 581fda7497b7393df7ab9948a67626746c735edaf3bf9235816ff5b95928324e

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