Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec234e12dd430095…

MALICIOUS

PDF

75.4 KB Created: 2021-02-16 04:45:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: 5fb93ac472652fd2c1544eeecf987f01 SHA-1: 924efdeb1e2918e00d0640e217c68dc22be2befc SHA-256: ec234e12dd43009547c10f30f2e9f88507e681f85551f758bc7a30c6219d5726
134 Risk Score

Malware Insights

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

The PDF file contains multiple external URIs, with one prominently featuring a keyword search for 'the lion king download mp4 google drive', suggesting a lure for users seeking content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. The presence of numerous links to disposable or suspicious domains reinforces the malicious nature of the document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/wix?keyword=the+lion+king+download+mp4+google+drive PDF link annotation
    • http://reduslim-official.website/stihl_fs_90_trimmer_head_partsa3jih.pdfIn PDF document text
    • https://cdn.sqhk.co/luxixumogez/dygfX1j/teachers_union_california_demands.pdfIn PDF document text
    • https://cdn.sqhk.co/kiribikiv/jlhejjm/fewigijanasegowidi.pdfIn PDF document text
    • http://virutimi.22web.org/autocad_blocks_free_s_school_furniture.pdfIn PDF document text
    • http://vashastrahovka24.ru/mathematics_syllabus_for_wassce2ndqr.pdfIn PDF document text
    • http://datinge.site/china_moon_moviea556p.pdfIn PDF document text
    • https://cdn.sqhk.co/boxokozofe/QghXjdY/diversification_examples_of_companies.pdfIn PDF document text
    • http://rujawobezixevib.iblogger.org/nadra_b_form_fees_2018.pdfIn PDF document text
    • http://jevopapivixepe.iblogger.org/access_control.pdfIn PDF document text
    • https://cdn.sqhk.co/befozaxulot/UidzghI/nimamowotufikotukikagisi.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/pilazi/acknowledgment_template_for_thesis.pdfIn PDF document text
    • http://deketinak.rf.gd/4553987899.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_off0000ebc8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBC8 5448 bytes
SHA-256: ce47247a9793cff26389b7673e76a925de27e6efac44da2376781e9d3f7a2c3a
font_01_sfnt_off0000fe45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE45 10184 bytes
SHA-256: b870221e211df6123add1b9a8d32a9cb96f6f5ad4d43c1a69e5dc4b3b80ff0d0

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