Malicious PDF — malware analysis report

Static analysis result for SHA-256 55fe1374d4745a73…

MALICIOUS

PDF

41.7 KB Created: 2021-05-17 08:09:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: a44d7cf9cf254b109e469ee3c77a094a SHA-1: aa1e26f0a946cfcbee3366513502d01b698b1536 SHA-256: 55fe1374d4745a73c0a6d6ead0efebc70651959a03ca994b5b898c715a962aae
142 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains a large number of external links, many of which are presented as game hacks or generators. The primary URL, https://netcdn.xyz/app/406889139/hack-coin-master-1-game-hack, and numerous others hosted on montchanintt.fr, suggest a link farm designed to redirect users to potentially malicious content. The presence of a visual download button lure further supports the malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • 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/hack-coin-master-1-game-hack PDF link annotation
    • http://montchanintt.fr/images/how-to-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://montchanintt.fr/images/free-roblox-codes-2021_GM431946152.pdfIn PDF document text
    • http://montchanintt.fr/images/how-to-get-robux_GM431946152.pdfIn PDF document text
    • http://montchanintt.fr/images/minecraft-pe-free-download-ios-no-jailbreak_GM479516143.pdfIn PDF document text
    • http://montchanintt.fr/images/coin-master-hack-tool-v1-9_GM406889139.pdfIn PDF document text
    • http://montchanintt.fr/images/free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://montchanintt.fr/images/coin-master-15-free-spin-link-of-last-5-days_GM406889139.pdfIn PDF document text
    • http://montchanintt.fr/images/hack-free-spin-coin-master_GM406889139.pdfIn PDF document text
    • http://montchanintt.fr/images/how-to-get-free-coins-in-minecraft_GM479516143.pdfIn PDF document text
    • http://montchanintt.fr/images/minecraft-xbox-one-edition-digital-code-free_GM479516143.pdfIn PDF document text
    • http://montchanintt.fr/images/how-to-get-free-robux-youtube_GM431946152.pdfIn PDF document text
    • http://montchanintt.fr/images/how-to-get-free-followers-on-roblox_GM431946152.pdfIn PDF document text
    • http://montchanintt.fr/images/coin-master-free-spins-link-blogspot-2021_GM406889139.pdfIn PDF document text
    • http://montchanintt.fr/images/free-robux-hack_GM431946152.pdfIn PDF document text
    • http://montchanintt.fr/images/how-do-you-get-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://montchanintt.fr/images/coin-master-daily-free-spins-hack_GM406889139.pdfIn PDF document text
    • http://montchanintt.fr/images/minecraft-free-download-mac-full-version-2021_GM479516143.pdfIn PDF document text
    • http://montchanintt.fr/images/play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://montchanintt.fr/images/minecraft-for-ps3-free_GM479516143.pdfIn PDF document text
    • http://montchanintt.fr/images/roblox-weird_GM431946152.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_off00004855.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4855 25056 bytes
SHA-256: 03326f22caaff85612abed442c07d25ed9310b1739c03e0de3a4ce484c52345e
font_01_sfnt_off000081e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81E5 17820 bytes
SHA-256: a92da5948b358c1444de2cd11ee08a13ae84b81ab982e265d18b9f82cd1c2753

Open this report in the interactive analyzer, or submit your own file for analysis.