Malicious PDF — malware analysis report

Static analysis result for SHA-256 a624d4c294fff7b5…

MALICIOUS

PDF

69.7 KB Created: 2020-12-26 21:28:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: b9c74b673b814f523d6aa7d3b7a8b24e SHA-1: ea8c978f1e693a724fb085186e960daa4f5e107c SHA-256: a624d4c294fff7b5ac81382bd045650e5dd04b00e7fe945373cc5daab72cbb88
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains an embedded URL that redirects to a website offering a game download, which is a common lure for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. The presence of multiple embedded URLs suggests an attempt to host or distribute malicious content.

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://trafftec.ru/strik?utm_term=jungle+adventure+game+download+uptodown PDF link annotation
    • https://molobaguzali.weebly.com/uploads/1/3/0/7/130739923/xorukeke.pdfIn PDF document text
    • https://zaximasuxudaris.weebly.com/uploads/1/3/4/5/134590642/tawif.pdfIn PDF document text
    • https://cdn.sqhk.co/tavikagisato/hghfoig/mineral_spirits_vs_paint_thinner_vs_lacquer_thinner.pdfIn PDF document text
    • https://cdn.sqhk.co/kibizatududo/jbTdij1/reborn_dolls_cheap_amazon.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379038/normal_5fc5a4452d7df.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370071/normal_5f95d526effa6.pdfIn PDF document text
    • https://noxepelobisuse.weebly.com/uploads/1/3/1/8/131871648/839958145.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408976/normal_5fbe10ac9719c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382406/normal_5f934113e5800.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464735/normal_5fc6ad0fd0ba1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366376/normal_5f873ad929878.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4377905/normal_5fcc87bbd1a89.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/b1f16c99-7f7d-4031-b077-915ee0a35385/vurobopaxilaf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e9ce475e-5af1-4e21-a6e2-8298cabd1cc2/borerufazotawekenapuson.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8ae4c41f-c9ca-47f2-ae61-e39bb1521dd9/42524514184.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d6f8c0e9-82d6-41a0-b47c-ef03ae5857db/45155442690.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c600.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC600 5076 bytes
SHA-256: 47b12cfadc0426af69c2170a7e19c9654b2586f4d07c7c3f3028fda2c7c6040f
font_01_sfnt_off0000d73c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD73C 10200 bytes
SHA-256: 09a0121ecbf8467df8e716f9d074a4f3f0ae4070ff1af7b15ac30a119c131938
font_02_sfnt_off0000f949.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF949 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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