Malicious PDF — malware analysis report

Static analysis result for SHA-256 704bcc98a88c7007…

MALICIOUS

PDF

41.0 KB Created: 2020-10-02 17:59:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 19869f060568fb287990cba3fe2f93ce SHA-1: 2f8ae1aa63494fa5e5b27e4289fa967517d4189a SHA-256: 704bcc98a88c7007f266c227a0c4894571628f1b4eb696be33feec4bd5b658f7
132 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution T1059.007 JavaScript

The PDF contains embedded links and a visual download button, strongly suggesting a lure to trick the user into visiting a malicious URL. The primary URL identified, 'https://cctraff.ru/strik?keyword=green+kinemaster+apk+app', is flagged as a known malicious redirector. The document body, though heavily obfuscated, contains references to 'wkhtmltopdf' and 'Qt', indicating it was likely generated by a tool rather than being a legitimate document.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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://cctraff.ru/strik?keyword=green+kinemaster+apk+app In PDF document text
    • http://minuvipag.oavolleyball.com/uploads/1/3/1/4/131410952/tukipa_tereg_dapidijubotewuk.pdfIn PDF document text
    • http://files.iwcobserver.org/uploads/1/3/1/4/131407194/5431554.pdfIn PDF document text
    • http://files.exploreshc.com/uploads/1/3/1/3/131380892/6984761.pdfIn PDF document text
    • http://files.davidmartinsstyle.com/uploads/1/3/0/7/130776201/mazokozologizadan.pdfIn PDF document text
    • http://files.nhdmo.org/uploads/1/3/0/7/130776674/1050151.pdfIn PDF document text
    • https://site-1039688.mozfiles.com/files/1039688/55631208805.pdfIn PDF document text
    • https://site-1036698.mozfiles.com/files/1036698/barawakeduj.pdfIn PDF document text
    • https://site-1036779.mozfiles.com/files/1036779/16863106322.pdfIn PDF document text
    • http://roxob.observationsandconclusions.com/uploads/1/3/2/6/132681910/268b0.pdfIn PDF document text
    • http://xunab.teaandtango.com/uploads/1/3/2/7/132740214/xozezubopezobej.pdfIn PDF document text
    • https://site-1037096.mozfiles.com/files/1037096/filaxowezolefutajopekiji.pdfIn PDF document text
    • https://site-1036835.mozfiles.com/files/1036835/wewox.pdfIn PDF document text
    • https://site-1037885.mozfiles.com/files/1037885/rafonitiriferovumak.pdfIn PDF document text
    • https://site-1036640.mozfiles.com/files/1036640/disuwiw.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000636a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x636A 5028 bytes
SHA-256: 0051583fd2edbbf1f87ec88f184995bf884c0b522ed9bba4b75c43b5ea136ee7
font_01_sfnt_off0000746e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x746E 10128 bytes
SHA-256: 3a8b49f379d0bfda7a20d5a792350d366befbb74bd46c1326c8f4919c01a7dfe

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