Malicious PDF — malware analysis report

Static analysis result for SHA-256 9175c20742de0cfd…

MALICIOUS

PDF

42.8 KB Created: 2021-05-14 02:34:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 78b0ddab29c4df966f5e6029d4ca29f8 SHA-1: 8610b2cd5165cba4ed2f248fdb3451d3ecc9b4b2 SHA-256: 9175c20742de0cfd66763b70cff220ab57c4b3d6687cc29ca00ef72c7388be71
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that are designed as lures for game hacks and free currency. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' specifically flags this behavior, indicating the document's primary purpose is to redirect users to potentially malicious sites. No scripts were extracted, but the presence of numerous game-related lures suggests a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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-shields-coin-master-game-hack In PDF document text
    • http://henrikedmark.com/images/win-free-robux_GM431946152.pdfIn PDF document text
    • http://henrikedmark.com/images/cm-free-spins_GM406889139.pdfIn PDF document text
    • http://henrikedmark.com/images/need-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://henrikedmark.com/images/how-to-get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://henrikedmark.com/images/roblox-free-robux-com_GM431946152.pdfIn PDF document text
    • http://henrikedmark.com/images/coin-master-rewards_GM406889139.pdfIn PDF document text
    • http://henrikedmark.com/images/free-spins-coin-master-october-13-2021_GM406889139.pdfIn PDF document text
    • http://henrikedmark.com/images/free-robux-hack_GM431946152.pdfIn PDF document text
    • http://henrikedmark.com/images/how-many-villages-are-in-coin-master_GM406889139.pdfIn PDF document text
    • http://henrikedmark.com/images/free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://henrikedmark.com/images/is-it-possible-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://henrikedmark.com/images/coin-master-free-spins-only_GM406889139.pdfIn PDF document text
    • http://henrikedmark.com/images/www-robux_GM431946152.pdfIn PDF document text
    • http://henrikedmark.com/images/free-spins-coin-master-2021-hack_GM406889139.pdfIn PDF document text
    • http://henrikedmark.com/images/haktuts-coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://henrikedmark.com/images/coin-master-free-spin-2912-2021_GM406889139.pdfIn PDF document text
    • http://henrikedmark.com/images/apps-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://henrikedmark.com/images/free-robux-com-2021_GM431946152.pdfIn PDF document text
    • http://henrikedmark.com/images/roblox-free-models_GM431946152.pdfIn PDF document text
    • http://henrikedmark.com/images/free-coins-on-coin-master-generator_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_003_off00004bce.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4BCE 25352 bytes
SHA-256: c650fa5d252e78a6f53374f1dab2f318a2fbb9facf30d55338a547aea33de44c
font_01_sfnt_off000085c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85C3 18124 bytes
SHA-256: e085952d3720952a51e878c41e5b5c7a5f24b6488949d11870729d067ad6b009

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