Malicious PDF — malware analysis report

Static analysis result for SHA-256 464d0a43fa8f6795…

MALICIOUS

PDF

77.8 KB Created: 2021-02-20 23:08:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 987c66d55dfdad2cbe0ef6fe892fa446 SHA-1: bdbb09cf50b5e416017510d55dd8c99cad37b36a SHA-256: 464d0a43fa8f6795957e719395c2210e41f17c77cfb32736c056f2baed212032
96 Risk Score

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 specific detection name indicating it's a phishing trojan. The PDF contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a malicious site. While no scripts were explicitly extracted, the PDF structure and the presence of an external URI suggest an attempt to deliver a malicious payload or phish for information.

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://druttle.ru/strik?utm_term=how+to+find+the+half+life+of+an+element PDF link annotation
    • https://cdn.sqhk.co/kavonalitego/jgX1ezj/54852672193.pdfIn PDF document text
    • https://cdn.sqhk.co/madosodu/h16Rhay/premier_league_fantasy_football_gameweek_6.pdfIn PDF document text
    • https://cdn.sqhk.co/befozaxulot/PhaPQhj/game_maker_online_free_3d.pdfIn PDF document text
    • https://cdn.sqhk.co/xinulezebi/jahhjbx/12391894243.pdfIn PDF document text
    • https://cdn.sqhk.co/fomezawelud/c4ien4a/spices_hut_restaurant.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zuriromaruwo.epizy.com/advanced_rar_repair_pro.pdfIn PDF document text
    • https://s3.amazonaws.com/bomupi/39786270980.pdfIn PDF document text
    • http://sogirujik.rf.gd/bopesagigezukapomafi.pdfIn PDF document text
    • http://medipebep.rf.gd/zekat.pdfIn PDF document text
    • https://s3.amazonaws.com/pasutiz/aai_tamil_movie_video_songs.pdfIn PDF document text
    • https://s3.amazonaws.com/xufujofaleki/free_christmas_greeting_card_templates_printable.pdfIn PDF document text
    • https://s3.amazonaws.com/toguvaju/ragafaka.pdfIn PDF document text
    • https://s3.amazonaws.com/limewub/repawojodifafexiza.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_off0000f4b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4B5 4924 bytes
SHA-256: 01b1212fa2219c1314629ed17bd03867d233a9b48928d235f146c464604cd850
font_01_sfnt_off00010563.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10563 10892 bytes
SHA-256: 4784dc58e296ef8a7444479369a99ed5abf48c2d8da14b97a696f8d181fa45c2