Malicious PDF — malware analysis report

Static analysis result for SHA-256 97236f7fe38242a6…

MALICIOUS

PDF

68.2 KB Created: 2020-12-24 13:27:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: d30803d4adb99cae7e1677dc00fa46ea SHA-1: 15e8bd08cde7bec31c1a9d692a4936193fd160b4 SHA-256: 97236f7fe38242a665869896c5c337f0b8f6eb536fec24805edcf4a27b3cd5f7
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains an embedded URI pointing to 'trafffe.ru', which is likely used for phishing or to download a secondary payload. The presence of this URL and the overall detection strongly suggest a phishing attack vector.

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
  • 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://trafffe.ru/strik?utm_term=scenery+shop+near+me PDF link annotation
    • https://cdn.sqhk.co/kefesizo/hi1wggM/worldreader_free_books.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421040/normal_5f9cccc274024.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4377414/normal_5fdef9f66504b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387244/normal_5fd34cfa7c508.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491687/normal_5fb2defaec616.pdfIn PDF document text
    • https://cdn.sqhk.co/pitadewedobu/hfijggi/r-_type_final_2_ps5.pdfIn PDF document text
    • https://cdn.sqhk.co/samivegin/fidiahb/poxize.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376380/normal_5fe00ea99ce6c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369665/normal_5f88c7c152d2b.pdfIn PDF document text
    • https://cdn.sqhk.co/xowuzaseku/R1K8Rvv/call_me_emperor_ministers.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465388/normal_5fcfe8a076b02.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/78737a16-d296-47ee-9586-3d77cf3398df/ageless_male_class_action_lawsuit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/880c3534-c748-4a24-91de-58ae14476311/wepoxefetesexov.pdfIn PDF document text
    • https://s3.amazonaws.com/webipejonavuv/jafisomekikoninefededifu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e2572cce-d866-4d15-89ed-7ed0cd278a2e/23307850385.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f2251063-1d31-4e65-b1ca-323679366e51/call_of_duty_black_ops_maps_download.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b95e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB95E 5348 bytes
SHA-256: 6e3e4218c2c64f7f39bfaee282b01eff3d166972d110261a2cb99995741d015b
font_01_sfnt_off0000cb6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB6D 10352 bytes
SHA-256: 4e5d79a606121d434650f9b59d9f0de7cbfc45b5e7eae9bf2e2bd6b4b59b2640
font_02_sfnt_off0000ee95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE95 16164 bytes
SHA-256: ebd2804bff382343e08f6a42dc45f69f4e794c08b23908ae60ba78ededae74b1

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