Malicious PDF — malware analysis report

Static analysis result for SHA-256 6bacc6ded500a4fa…

MALICIOUS

PDF

74.3 KB Created: 2021-02-23 13:40:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: b663287f817f7809397e7cf6513dddb5 SHA-1: 2bf3aa24131d81e20eeab577e96622af07f874a5 SHA-256: 6bacc6ded500a4faad76f847bb14ec0eee2555bcd91e03cf719afe1292448cbf
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs pointing to disposable hosting domains, suggesting a phishing or malware distribution scheme. The document body, though heavily obfuscated, appears to be a lure related to dog theft, intended to trick users into visiting these malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://druttle.ru/123?utm_term=how+to+protect+your+dog+from+theft PDF link annotation
    • https://vilawamilufulob.weebly.com/uploads/1/3/6/0/136006615/meginenefuju-texonururifo-dizupunomajokuw.pdfIn PDF document text
    • http://idealslimitaly-ufficiale.site/juwipogilulixlnlyu.pdfIn PDF document text
    • http://adv-workshop.site/55341567363qsb3y.pdfIn PDF document text
    • http://liketsven.xyz/creature_3d_full_movieebpt9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378404/normal_5ff01737a26f8.pdfIn PDF document text
    • https://senidexug.weebly.com/uploads/1/3/0/7/130775540/paxupedomusiwe.pdfIn PDF document text
    • http://myyshooop224.site/bekorirokifoxuwofivu7tcqn.pdfIn PDF document text
    • http://detonic-deutschland.website/daramapufo8tfuj.pdfIn PDF document text
    • https://fexifeter.weebly.com/uploads/1/3/4/6/134612515/5302396.pdfIn PDF document text
    • http://rijesukedad.22web.org/noniwolosadazuniwuxigog.pdfIn PDF document text
    • https://bobusenig.weebly.com/uploads/1/3/4/8/134866704/lavuxubezoxelufak.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/rawesaragegugar/62629593480.pdfIn PDF document text
    • http://buvizukiwixo.rf.gd/7439855046.pdfIn PDF document text
    • http://pexaniruvuwuwe.rf.gd/hingham_journal_police_report.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_off0000e502.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE502 5304 bytes
SHA-256: 83f38c20701ff5f2f4d525c3078ce0aabbe621704cfd782d0a1736f47d1145fa
font_01_sfnt_off0000f702.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF702 11028 bytes
SHA-256: d76d1ceaf7a025876020080eb20b530f80771046a3a9ced028fb32085c676096

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