Malicious PDF — malware analysis report

Static analysis result for SHA-256 22188be33ede7dbc…

MALICIOUS

PDF

42.6 KB Created: 2021-05-13 03:30:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 1ba0a545e3d0198363a4f01a0d2003b5 SHA-1: 8c54b4bbeefa98b42ff1f10e12f6e234334a0cdc SHA-256: 22188be33ede7dbc379f43596eb5f7f01b5f813f3000c21651962ae41b151733
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors and infrastructure, disguised as game hack generators. The primary lure URL is https://netcdn.xyz/app/406889139/coin-master-hack-pro-gamers-game-hack, which likely leads to further malicious content or downloads. The ML classifier also strongly indicated maliciousness.

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/coin-master-hack-pro-gamers-game-hack In PDF document text
    • http://ohsawamacrobiotics.com/images/free-robux-real_GM431946152.pdfIn PDF document text
    • http://ohsawamacrobiotics.com/images/hack-coin-master-free_GM406889139.pdfIn PDF document text
    • http://ohsawamacrobiotics.com/images/mcpe-116_GM479516143.pdfIn PDF document text
    • http://ohsawamacrobiotics.com/images/coin-master-34-5-hack_GM406889139.pdfIn PDF document text
    • http://ohsawamacrobiotics.com/images/legit-coin-master-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • http://ohsawamacrobiotics.com/images/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://ohsawamacrobiotics.com/images/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://ohsawamacrobiotics.com/images/minecraft-free-computer-game_GM479516143.pdfIn PDF document text
    • http://ohsawamacrobiotics.com/images/hack-my-game-xyz-coin-master_GM406889139.pdfIn PDF document text
    • http://ohsawamacrobiotics.com/images/how-to-install-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://ohsawamacrobiotics.com/images/get-robux-com_GM431946152.pdfIn PDF document text
    • http://ohsawamacrobiotics.com/images/80-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://ohsawamacrobiotics.com/images/is-roblox-hacked_GM431946152.pdfIn PDF document text
    • http://ohsawamacrobiotics.com/images/how-to-sue-roblox_GM431946152.pdfIn PDF document text
    • http://ohsawamacrobiotics.com/images/coin-master-generator-free_GM406889139.pdfIn PDF document text
    • http://ohsawamacrobiotics.com/images/how-to-get-free-robux-website_GM431946152.pdfIn PDF document text
    • http://ohsawamacrobiotics.com/images/minecraft-mojang-free_GM479516143.pdfIn PDF document text
    • http://ohsawamacrobiotics.com/images/spin-coin-master_GM406889139.pdfIn PDF document text
    • http://ohsawamacrobiotics.com/images/robux-hack-free-robux_GM431946152.pdfIn PDF document text
    • http://ohsawamacrobiotics.com/images/coin-master-free-link-2021_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_off00004b8f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B8F 24828 bytes
SHA-256: ec8d98562090f4b7d74d862030a27e74e61a586f1e1d12775be7737faefe11bb
font_01_sfnt_off000084d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84D2 18132 bytes
SHA-256: 7c3ba000fcc9e82367a9cf09e7428e48624a936725f215f3086fe1b405a0b7f2

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