Malicious PDF — malware analysis report

Static analysis result for SHA-256 92debc17867149c1…

MALICIOUS

PDF

67.0 KB Created: 2020-12-31 00:03:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 94d892f42a38b044655f5b0c13ea185e SHA-1: 815d26e5f3bbc46817635fdbcf37a0cfa7ce4f0e SHA-256: 92debc17867149c1dcedf9c8db72be082ed612aa225f83816d7513b56a7dea48
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL pointing to a suspicious domain, trafftec.ru. The ML classifier and ClamAV detection strongly indicate maliciousness, classifying it as a phishing trojan. The document body, though heavily obfuscated, appears to be a lure related to a search query, directing the user to 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://trafftec.ru/strik?utm_term=gumball+voice+actor+2019 PDF link annotation
    • https://cdn.sqhk.co/vigesiji/bidMzyP/longaberger_pottery_vitrified.pdfIn PDF document text
    • https://cdn.sqhk.co/rifokinimito/iaeheid/vagatedopewenarep.pdfIn PDF document text
    • https://rivebopufu.weebly.com/uploads/1/3/4/6/134663658/wikakamokogegaju.pdfIn PDF document text
    • https://letolikasepa.weebly.com/uploads/1/3/4/6/134625664/b37a967687.pdfIn PDF document text
    • https://cdn.sqhk.co/jefokejab/94ighhy/29679215533.pdfIn PDF document text
    • https://tasototunone.weebly.com/uploads/1/3/4/7/134755659/555492e697.pdfIn PDF document text
    • https://cdn.sqhk.co/rojarasam/S7hhhf7/dream_score_soccer_champion_apk.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/c0612de0-687f-40fd-9ca4-335b66fb5eab/tebevodarinopusinulem.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bbf54d56-5d63-4734-9d3b-6d891f3a9e05/86181921036.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0cb49146-2aa1-4a80-90a3-26f52877c3ec/ginap.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/50ca65e5-bf81-4571-a51f-960cd7fa412a/diccionario_filosfico_marxista_1946.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://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bbf0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBBF0 5480 bytes
SHA-256: 89f8d5a3e7b941c73279378e650547c1e51eb4f26d61c1be301a123e43429dfe
font_01_sfnt_off0000ce83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE83 3720 bytes
SHA-256: 6539b129c5cd894636dc8f40f53a156c00c8f46378ab4f137c96d687a1cff6ed
font_02_sfnt_off0000d9e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9E6 11116 bytes
SHA-256: 96b483e02f6c18cdc1d7e3a9091d09afe13553bd1e2ab7755f62afb2d5fb0d3d