Malicious PDF — malware analysis report

Static analysis result for SHA-256 d83763397e8e05a1…

MALICIOUS

PDF

81.3 KB Created: 2021-01-25 08:49:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 2627222baa50ef2ec31523c16dfee1d5 SHA-1: 56b1e8c410012f9b94eebc2292d9997cf3593519 SHA-256: d83763397e8e05a143e0c0934e28d0444e0b004c3f0ffacd193d0f124e63ad93
96 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'jacksth.ru' and numerous other URLs, several of which are hosted on suspicious domains and likely serve as download locations for further malicious content. The presence of PDF-specific heuristics further supports its classification as a malicious PDF.

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://jacksth.ru/123?utm_term=150+inch+projector+screen+stand PDF link annotation
    • https://cdn.sqhk.co/gederanew/hfgcjca/fujexolorevasoluv.pdfIn PDF document text
    • http://pinegrvuig.fun/51147904823m2iki.pdfIn PDF document text
    • http://istlan.space/8660128872163p1s.pdfIn PDF document text
    • https://cdn.sqhk.co/vivupedasez/Wggdxe2/dr_kongara_srikanth.pdfIn PDF document text
    • http://sfhgfje5df.xyz/cruise_royal_caribbean_international_stock_priceyl4xv.pdfIn PDF document text
    • https://cdn.sqhk.co/someteku/bJLuzhh/70698925700.pdfIn PDF document text
    • https://cdn.sqhk.co/wepurodapike/igl3Cjf/68629845741.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/tugumeb/17100102925.pdfIn PDF document text
    • https://s3.amazonaws.com/safenalavojuwu/arte_da_argumentao.pdfIn PDF document text
    • https://s3.amazonaws.com/bamepofewalada/30369418250.pdfIn PDF document text
    • https://s3.amazonaws.com/bifamomove/coreldraw_2019_completo_crackeado.pdfIn PDF document text
    • https://s3.amazonaws.com/luropiw/pure_cash_app.pdfIn PDF document text
    • https://s3.amazonaws.com/kasuwevovog/bahubali_2_full_movie_eng_sub.pdfIn PDF document text
    • http://poravilotizeve.epizy.com/30651388245.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010066.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10066 5428 bytes
SHA-256: 229eaa388c5c9e786eac22b2f2933bcde6727de6aebd80bf139780e24474fbc7
font_01_sfnt_off000112e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x112E0 11240 bytes
SHA-256: 5362553f96e6b9bd1db69fbf11e0ac9067b748b04031a115f97598254d7b5c8e

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