Malicious PDF — malware analysis report

Static analysis result for SHA-256 408bc0912fef96f5…

MALICIOUS

PDF

62.6 KB Created: 2020-12-31 23:41:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 557d2d3846dc7a2761ffc2d0b5e86db2 SHA-1: 643727f765a33149a11ba471d271711dffadbf9f SHA-256: 408bc0912fef96f5b9e46a236a60d385f9bac115d8781a50653f82ebaa632682
96 Risk Score

Malware Insights

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

The sample was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains multiple embedded URLs pointing to external resources, suggesting it is used to redirect users to malicious sites or download further payloads. The presence of PDF-specific heuristics and embedded URLs strongly suggests a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://traffine.ru/123?utm_term=child+of+god+cormac+mccarthy+pdf+download
    • https://pufukowog.weebly.com/uploads/1/3/4/5/134583281/4257094.pdf
    • https://cdn-cms.f-static.net/uploads/4492555/normal_5fdb7f877a792.pdf
    • https://mawakigimewu.weebly.com/uploads/1/3/4/8/134875352/muvosog.pdf
    • https://cdn-cms.f-static.net/uploads/4376870/normal_5f980559887e5.pdf
    • https://cdn.sqhk.co/diratukuz/jchjiiM/74750683346.pdf
    • https://vumifedesonuzik.weebly.com/uploads/1/3/4/8/134849268/fovosazam.pdf
    • https://cdn.sqhk.co/leperanurosi/jbhasBq/fitexewenujonemokiwutuken.pdf
    • https://noduxureravit.weebly.com/uploads/1/3/4/7/134743755/lojipasusive_zunuso.pdf
    • https://cdn.sqhk.co/zubuwebofe/dlgjjbt/29394794017.pdf
    • https://static.s123-cdn-static.com/uploads/4425214/normal_5fca05926a230.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b320.bin
4b0d6dee5cb731ecf3dcf1c7404ecfb4a47af86a5b9e8b9660917e0f17698494		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB320 5488 bytes
font_01_sfnt_off0000c5b7.bin
251c46d55bb127f0383bee06dfb12dfb7f6e2849265f090c269d3f7b1eb6270c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC5B7 12516 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.