Malicious PDF — malware analysis report

Static analysis result for SHA-256 9260e3ba9a998d55…

MALICIOUS

PDF

109.0 KB Created: 2020-12-05 11:59:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: df827149803c3c25de2f4594d9302261 SHA-1: 8a73442df2e6db78c6445a595eacacd3eeaaa443 SHA-256: 9260e3ba9a998d55af31229e6d1e2dee297c76dfe21cfefdd6983b8a7e3a553b
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file is a PDF containing an embedded URL that points to a suspicious domain, traffset.ru. This domain is often associated with phishing or malware distribution campaigns. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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/strik?utm_term=seraphic+mass+association+review PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4490252/normal_5fc40a4b723ee.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403689/normal_5f968bde2d3ce.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465128/normal_5fb2c10c73644.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423166/normal_5f9ca543a222a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412902/normal_5fbe404ad3546.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415974/normal_5fba4a1164081.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377109/normal_5f98b0e9f1c82.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485305/normal_5fa7967e6c235.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366020/normal_5fafe3dd2b39c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469852/normal_5fbe7ac6dafec.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374951/normal_5fbdfef87c8db.pdfIn PDF document text
    • http://fontawesome.iohttp://fontawesome.io/license/In 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/5fc0d00e405d5340f3291e5b/t/5fc0f29961e25426e15a492c/1606480541407/punchline_algebra_book_a_7.17_answer_key.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0d4086b97992eb55bb7f9/t/5fc20fa53f75b166431b7500/1606553516617/98845139197.pdfIn PDF document text
    • https://s3.amazonaws.com/jafujasiwetid/words_for_bravery.pdfIn PDF document text
    • https://s3.amazonaws.com/sazixipame/best_automobile_engineering_books_free.pdfIn PDF document text
    • https://s3.amazonaws.com/zizene/91229033468.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f448.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF448 29196 bytes
SHA-256: 264829b0e06325006a3d999de60e80e85ae0012f1cd2132ab829d385db8c7813
font_01_sfnt_off00014d56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14D56 2424 bytes
SHA-256: 53068f6d35406d412dae3b2d6582bb2963c7ee7cde4e1384baa3eed4cf5d8a6d
font_02_sfnt_off00015810.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15810 5396 bytes
SHA-256: 48bf7752b3a929bb4eaffc672c45b85db32d3da6929130a9b0bbdeeb6d557d11
font_03_sfnt_off00016a54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16A54 10980 bytes
SHA-256: 71e25b7d26139f9fa46a7c57477052f42cd48c93d5d96a6b5d2fe757a176576d
font_04_sfnt_off00019013.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19013 16164 bytes
SHA-256: e428de66ceb9deebdb53ebe71febfe16dde38f113f03500bd416f391f33c23f3

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