Malicious PDF — malware analysis report

Static analysis result for SHA-256 aaa3df7d29014c73…

MALICIOUS

PDF

77.5 KB Created: 2021-01-16 11:39:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 15f3ffd2fa3c703fe502520de163becc SHA-1: 1251b0c5a8adef0fc11bb9258e501ec418b445b5 SHA-256: aaa3df7d29014c73fa407da7a7cc330607eac8dd5438bbd8739729071913cdfc
96 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains an embedded URL that leads to a suspicious domain, likely intended for phishing or malware distribution. The document body, though heavily obfuscated, suggests a lure related to booking a flight, aligning with common phishing tactics.

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/123?utm_term=night+flight+book+pdf PDF link annotation
    • https://cdn.sqhk.co/fofesali/hcURjce/87823165413.pdfIn PDF document text
    • https://cdn.sqhk.co/kafevinuva/UmnCPT4/ralph_s_restaurant_prices.pdfIn PDF document text
    • https://cdn.sqhk.co/rilixuzewiv/uqkQgcV/bozubiz.pdfIn PDF document text
    • https://cdn.sqhk.co/xezexasag/ghf9ifg/besarusego.pdfIn PDF document text
    • https://cdn.sqhk.co/letinumi/dvhjhik/dowasakipakejegusora.pdfIn PDF document text
    • https://cdn.sqhk.co/volinafi/jaOjcii/fonavo.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/dezajok/sosanokijutez.pdfIn PDF document text
    • https://s3.amazonaws.com/nupotukig/story_structure_map.pdfIn PDF document text
    • https://s3.amazonaws.com/subud/sisisutujupaweb.pdfIn PDF document text
    • https://s3.amazonaws.com/kevava/vikeguvuwuxalinametas.pdfIn PDF document text
    • https://s3.amazonaws.com/napejaxosinages/investigational_drug_data_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/xutomoxu/character_certificate_letter_format.pdfIn PDF document text
    • https://s3.amazonaws.com/feliso/vivomoninapago.pdfIn PDF document text
    • https://s3.amazonaws.com/fapaga/lifestealer_guide_7._20.pdfIn PDF document text
    • https://s3.amazonaws.com/xurixado/1mobile_market_app_for_kindle_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/nitizobuv/multilingual_website_template_free.pdfIn PDF document text
    • https://s3.amazonaws.com/nosepevozux/22212977748.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_off0000f447.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF447 4992 bytes
SHA-256: f1289fff61b29ddcfd630fa58c678f8068eb1cb503e67778972ffb2fe5f5ab90
font_01_sfnt_off0001054c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1054C 10452 bytes
SHA-256: 27c610bb7d09db8a90ec8f808424efc19a25f79ac7500c88fb1aba99d621b1bb

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