Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff2e020709bbc44b…

MALICIOUS

PDF

203.2 KB Created: 2021-01-04 22:06:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 635ed88407b15b73bd1516a5bcd797c3 SHA-1: 9dd2d085d638fa55a1cb84530a185e4166795fc7 SHA-256: ff2e020709bbc44b28b05ddd6205b5d1f6759361daf050049428c62c3267c745
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, traffset.ru, which is likely part of a phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9935

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://traffset.ru/123?utm_term=i%2527m+still+hurting+sheet+music+free PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4401712/normal_5fa26bcd2eff6.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/mejigavukolu/tikedinikososizupokovit.pdfIn PDF document text
    • https://s3.amazonaws.com/nitajosasa/bloomberg_professional_application.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/31a5ef81-1612-4af9-b9c8-751ab4874947/john_smith_1.14.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0c01b591-c56b-4d1b-b479-169295e78e07/denotation_and_connotation_worksheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/af8534c2-b93d-4aa6-91c1-773a9b08d087/kabapavepifejokamurikeles.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/64d81700-eb3c-4804-8716-60b15a27de68/dining_room_chairs_set_of_4_near_me.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/50423192-b157-4888-a23a-8a4ae950b480/95867262751.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4d796a98-4695-4d70-9ed7-b0217f52a1ec/barclay_william_daily_study_bible.pdfIn PDF document text
    • https://s3.amazonaws.com/wixatax/petekigafos.pdfIn PDF document text
    • https://s3.amazonaws.com/farezelof/akhand_jyoti_patrika.pdfIn PDF document text
    • https://s3.amazonaws.com/fokena/64496511924.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_007_off0002e25d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2E25D 26788 bytes
SHA-256: 75d8f8343f21eba4344d349daec598650ee75ff6759ff6d6518c1b58cfa045e1
font_00_sfnt_off0002ad30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2AD30 4828 bytes
SHA-256: 184112e38704e4a57a568e97bd2ecff606801b77c9717316971271c0fef9c7be
font_01_sfnt_off0002bd6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2BD6F 10776 bytes
SHA-256: 5cd5a7a718b3e1a247e5cce5edf2dc307b7d89f2276936caecb8278ca4eca922
font_03_sfnt_off00030ff5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30FF5 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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