Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ce2f3a342acde5f…

MALICIOUS

PDF

79.1 KB Created: 2020-12-28 21:08:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 0518cb8cad6df7a9e2f45242a09d43a3 SHA-1: 7a6de5db84adcbf42e22242e66174908f7983fdd SHA-256: 9ce2f3a342acde5f6f1127ad1f9b889d13fb38c898f219abf56a2ae14f14f360
96 Risk Score

Malware Insights

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

The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and an ML classifier returned a high probability of maliciousness. An embedded URI points to a suspicious domain, traffnew.ru, which is likely used to host a phishing page or distribute malware. The document body, though heavily obfuscated, contains text related to 'Police scanner app android', suggesting a social engineering lure.

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
  • 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=police+scanner+app+android PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4401518/normal_5fa1be959adff.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378845/normal_5f97a149e4900.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381997/normal_5f9e3931b1104.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366335/normal_5f885f2f5d838.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465935/normal_5fbdffd41ba3f.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/93841d5c-8c4d-457a-bac9-83d0d59b3683/64302124728.pdfIn PDF document text
    • https://s3.amazonaws.com/votawawo/women_s_black_night_shirt.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/28d48c4c-3e36-4be1-a0f3-da7630f30258/jijoti.pdfIn PDF document text
    • https://s3.amazonaws.com/tesapibebujep/liwaku.pdfIn PDF document text
    • https://s3.amazonaws.com/mubemutolewe/pdf_to_word_download_converter.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files2/58932034354.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6111a23e-7bbd-4cfa-815d-52cd8979341f/didibemudedidajikuwowikes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/775d420b-6b56-47b1-8db5-42880f07cac7/pogetopedakesa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0a8574a2-9b6b-420e-8b70-c38add31094f/guia_bloodborne_ps4.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_off0000f805.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF805 5068 bytes
SHA-256: 8e72dfe97b809e046f93d28e7209f03a14e400cf38826e164fd555264b346cd4
font_01_sfnt_off00010952.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10952 11164 bytes
SHA-256: 7638956879c70d54690aa812ec08357ce8cfdb3bbcb2507d95fe5b049ccb94b1

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