Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ed41b2805d53e9f…

MALICIOUS

PDF

71.2 KB Created: 2021-02-21 23:58:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-04
MD5: 7ade8f4e9ade11d8b54bd6df9527a65d SHA-1: 4d5a105169add4dc449704b2b965ed6bf4265b97 SHA-256: 9ed41b2805d53e9f90b5d6f5c63f5a590516745e0ab1ac1dc50f97ead3e8dc92
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 URI pointing to a suspicious domain, identified as malicious by ClamAV and ML classifiers. The document body, though heavily obfuscated, suggests a lure related to a 'guide to good food'. The presence of multiple external URLs indicates an attempt to redirect the user to potentially malicious content, likely for phishing or malware distribution.

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://baarspo.ru/wix?keyword=guide+to+good+food+scrambled+eggs+answers PDF link annotation
    • http://appeal-ig.com/48266927458mvvas.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500674/normal_5fd8e1008a251.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379387/normal_6026517d59b05.pdfIn PDF document text
    • https://cdn.sqhk.co/jebavimot/jfBSihc/21815148371.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369191/normal_601448de83aef.pdfIn PDF document text
    • https://cdn.sqhk.co/vavusiwi/hhQgcTB/sazutarobixi.pdfIn PDF document text
    • http://psylath.com/52684723046ihq2c.pdfIn PDF document text
    • http://morpeoplelife.ru/kopijixaxekoubywt.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416493/normal_601806dbce1d3.pdfIn PDF document text
    • https://cdn.sqhk.co/wusezofetib/g6ifljj/8900674418.pdfIn PDF document text
    • https://cdn.sqhk.co/tukutabu/fidRDih/visit_a_city_barcelona_2_days.pdfIn PDF document text
    • http://letgtma.bid/ladazojex07kb.pdfIn PDF document text
    • https://cdn.sqhk.co/degavorofala/hd9geDP/zuzijerajegareremibezul.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nadezuj.epizy.com/82334600243.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_off0000d91b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD91B 5604 bytes
SHA-256: 3095e3ad656ce28c16d5ee25382a599a29d00e0d4f2e4c494da0b98bab95ee20
font_01_sfnt_off0000ec32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC32 10240 bytes
SHA-256: 9162fbc5ad12a4ebb7c34a918bf7a8c49e004d2137b2d5a05e796708a62c6bb9