Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6e28ad406b7a10d…

MALICIOUS

PDF

35.8 KB Created: 2021-05-20 20:31:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: f087b8c03a0b62e218bb25d4554bb888 SHA-1: a1325277249177f72984ef0ea647dde0a7af9c92 SHA-256: f6e28ad406b7a10df4a9a26e4aac50a7fdda87e63dba9a8c627bc8cd1cedf88f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to known malicious infrastructure, specifically promoting a "free generator / game hack" lure. The document body and heuristics indicate a social engineering tactic to trick users into visiting these malicious URLs. No scripts were extracted, but the presence of malicious links and the ML classifier's high confidence score support this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9492

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • 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.
  • 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
  • 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://netcdn.xyz/app/406889139/free-coin-master-gifts-game-hack In PDF document text
    • http://magnipsor.su/images/how-to-get-coin-master-card-free_GM406889139.pdfIn PDF document text
    • http://magnipsor.su/images/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://magnipsor.su/images/robux-com-free_GM431946152.pdfIn PDF document text
    • http://magnipsor.su/images/como-descargar-coin-master-hackeado_GM406889139.pdfIn PDF document text
    • http://magnipsor.su/images/coin-master-free-spin-whatsapp-group_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn 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
stream_002_off0000328e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x328E 24804 bytes
SHA-256: 4cd8c31a7dfdda9cb135e8a2e15c217beeee0a6dd18895af51c55aed3a751056
font_01_sfnt_off00006c21.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C21 17712 bytes
SHA-256: a02a8482596092bbe2b4efe270951b6f574c255f03fc3b97eeb87af209467e86

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