Malicious PDF — malware analysis report

Static analysis result for SHA-256 a574700752bd8789…

MALICIOUS

PDF

106.3 KB Created: 2020-11-24 07:43:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 4624aa736fd328bd34a44e442d3871cf SHA-1: 02a5324deaa9bb4b8eb324f4f63197d426d33354 SHA-256: a574700752bd8789bd3294d96e8eedd5b08bcf0bdfc7cc218caa551a897fb803
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a high risk score. It contains an embedded URI pointing to a suspicious domain, traffnew.ru, which is likely used to host a malicious payload or phishing content. The PDF structure and embedded objects suggest it's designed to exploit vulnerabilities or trick users into visiting the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://traffnew.ru/strik?utm_term=prussia+ideas+eu4+1.28 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4372360/normal_5f99205b8d23b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366381/normal_5f8c56b8bd2fd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446170/normal_5fa151804cd5c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478393/normal_5fb959588eed4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449178/normal_5fa35d5d58f85.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/dinisemowoge/norapigolitepig.pdfIn PDF document text
    • https://s3.amazonaws.com/leguvefu/assets_held_for_sale_ifrs_5.pdfIn PDF document text
    • https://s3.amazonaws.com/dezajok/wedding_invitation_template_and_print.pdfIn PDF document text
    • https://s3.amazonaws.com/jovekus/watch_larry_the_cable_guy_free_online.pdfIn PDF document text
    • https://s3.amazonaws.com/vekodupiwarobi/algebra_practice_problems_worksheet_answer_key.pdfIn PDF document text
    • https://s3.amazonaws.com/towutoginadivu/the_complete_far_side.pdfIn PDF document text
    • https://s3.amazonaws.com/tutapaxi/ninexizo.pdfIn PDF document text
    • https://s3.amazonaws.com/mibiwivanetuj/vowezesobemakukavigese.pdfIn PDF document text
    • https://s3.amazonaws.com/tutapaxi/a_small_place_jamaica_kincaid.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off0001743e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x1743E 23144 bytes
SHA-256: 9d3a999bf78a722ac652f7ec29aa62740d06d43c2c433bd1207973d5bb2187af
font_00_sfnt_off00013c38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13C38 5284 bytes
SHA-256: 2d4d0ab6756ceda2649941f1f47cc4df5cf21971bf46f14dc89cdbcc2b107eb8
font_01_sfnt_off00014e4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14E4C 11460 bytes
SHA-256: bdb3f1d10c80824279d6fac5f89f0462e865a42629cd6c32761615ed853f501c

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