Malicious PDF — malware analysis report

Static analysis result for SHA-256 c02a6997040a1a2b…

MALICIOUS

PDF

72.9 KB Created: 2020-12-20 13:40:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: 06ec9c41d1a0a103612280ea29477bca SHA-1: e10ea99fa019168b8e08b58c6976af93fac17fb6 SHA-256: c02a6997040a1a2ba8cbdfeefed85152b1c1640447e2985c6fe52f5b86c83126
156 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including ClamAV and an ML classifier, indicating malicious content. The presence of a large number of external links, particularly the 'PDF_SEO_LINK_FARM' heuristic, suggests a deceptive SEO strategy or a link farm designed to redirect users. The document body's mention of 'Minecraft hat mod 1.16.1' is likely a lure to attract unsuspecting users.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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=minecraft+hat+mod+1.16.1 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4379035/normal_5f9e19b7e31c8.pdfIn PDF document text
    • https://mesifadenox.weebly.com/uploads/1/3/4/1/134108947/fivubuxe_teniziputi_tajudin_nazugav.pdfIn PDF document text
    • https://pejilajapife.weebly.com/uploads/1/3/4/4/134477767/68a82bdd.pdfIn PDF document text
    • https://xojerajap.weebly.com/uploads/1/3/1/3/131384359/3373854.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409409/normal_5fb8572259fd9.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/norozovijalu/38580131310.pdfIn PDF document text
    • https://s3.amazonaws.com/pasawexawinogad/95936449580.pdfIn PDF document text
    • https://s3.amazonaws.com/xijalovelokolep/jojefolewekiwojis.pdfIn PDF document text
    • https://s3.amazonaws.com/sifawekujiki/29682773202.pdfIn PDF document text
    • https://s3.amazonaws.com/dekogamik/1338227630.pdfIn PDF document text
    • https://s3.amazonaws.com/vonutavekip/affidavit_for_name_change_after_marriage_format.pdfIn PDF document text
    • https://s3.amazonaws.com/remeranexe/jozokexakuba.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cb19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB19 5296 bytes
SHA-256: 348f1795ae88de148fd4ad9640dc5927924bda94b034ec63b037fe9289234b95
font_01_sfnt_off0000dd09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD09 10688 bytes
SHA-256: 7e16d9344ed14ea3a65dfd0dc27eb50d3836e7aca45e2f0002d604a98018234d
font_02_sfnt_off000101b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101B7 16064 bytes
SHA-256: 8ce0575abc6f686af3c1393089841c21814f5c4838d5adbe0d649219e58da802

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