Malicious PDF — malware analysis report

Static analysis result for SHA-256 50af988fe5c3fea1…

MALICIOUS

PDF

42.9 KB Created: 2021-05-14 16:31:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 8ac3c49db3f3a5cae71be581611b2b8a SHA-1: 35f22c430f9c21ca451407008aaf1746404b8a6e SHA-256: 50af988fe5c3fea156210983429510c5aa159cf6686f4e0b8f919d7cdc5c3912
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious File

The PDF contains numerous embedded links to external PDFs, many of which are SEO-optimized and related to game hacks and cheats. The document body explicitly mentions 'Coin Master Hack Xyz Apk Download' and includes a primary URL for downloading the hack. This indicates a social engineering lure to trick users into downloading potentially malicious software.

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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/coin-master-hack-xyz-apk-download-game-hack
    • https://www.elevage-chiot.fr/images/hack-para-coin-master-singapore_GM406889139.pdf
    • https://www.elevage-chiot.fr/images/free-spins-coin-master-app_GM406889139.pdf
    • https://www.elevage-chiot.fr/images/free-robux-no-human-verification-and-no-survey_GM431946152.pdf
    • https://www.elevage-chiot.fr/images/free-robux-only-username-no-human-verification_GM431946152.pdf
    • https://www.elevage-chiot.fr/images/coin-master-game-hack-app_GM406889139.pdf
    • https://www.elevage-chiot.fr/images/como-hackear-coin-master_GM406889139.pdf
    • https://www.elevage-chiot.fr/images/how-to-hack-roblox-accounts-on-phone-2021_GM431946152.pdf
    • https://www.elevage-chiot.fr/images/daily-coin-master-free-spin-link-facebook_GM406889139.pdf
    • https://www.elevage-chiot.fr/images/hack-coin-master-nyc_GM406889139.pdf
    • https://www.elevage-chiot.fr/images/free-robux-sites-2021_GM431946152.pdf
    • https://www.elevage-chiot.fr/images/free-realistic-minecraft-texture-packs_GM479516143.pdf
    • https://www.elevage-chiot.fr/images/games-like-coin-master-for-free_GM406889139.pdf
    • https://www.elevage-chiot.fr/images/coin-master-free-spins-apk-2021_GM406889139.pdf
    • https://www.elevage-chiot.fr/images/free-spins-for-coin-master-app_GM406889139.pdf
    • https://www.elevage-chiot.fr/images/how-to-get-free-hair-on-roblox_GM431946152.pdf
    • https://www.elevage-chiot.fr/images/coin-master-hack-iphone_GM406889139.pdf
    • https://www.elevage-chiot.fr/images/coin-master-hack-without-verification-2021_GM406889139.pdf
    • https://www.elevage-chiot.fr/images/minecraft-xbox-360-free-download-code_GM479516143.pdf
    • https://www.elevage-chiot.fr/images/free-spins-coins-coin-master_GM406889139.pdf
    • https://www.elevage-chiot.fr/images/coin-master-hack-online-generator-without-human-verification_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004946.bin
511d7ded1a6f52a805fd742c72237dfd28c4b3c3bfff00b9dc026c65086b9a0d
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4946 25064 bytes
font_01_sfnt_off000082ef.bin
42a942681b50248dcccc5fc85bca355d05b372000a3cb49c351c6f0dce64ffde
pdf-font-stream PDF embedded font (sfnt) at offset 0x82EF 18964 bytes