Malicious PDF — malware analysis report

Static analysis result for SHA-256 b502be6ec6023854…

MALICIOUS

PDF

44.9 KB Created: 2021-05-13 02:13:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 07f9a4117c134ee9c8a9b2fb0e008b7a SHA-1: 173495a66f43ecddf6d24df7d62d20db35bde533 SHA-256: b502be6ec60238548cca6159017dea57fa699407c95a11ebb32db8ccb603c3ce
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document exhibits characteristics of a phishing or scam attempt, specifically by luring users with promises of game hacks or cheats. The document contains numerous external links, many of which point to PDF files hosted on a link farm, suggesting an attempt to drive traffic to malicious content. The critical heuristic 'SE_SECRET_RECOVERY_LURE' indicates the document likely requests sensitive information such as private keys or recovery phrases, further reinforcing its malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9632

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.
  • Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE
    Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
  • 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-apk-3.2-download-game-hack
    • http://killebergsridsport.se/images/coin-master-free-spins-promo-code_GM406889139.pdf
    • http://killebergsridsport.se/images/how-to-get-free-robux-without-verification_GM431946152.pdf
    • http://killebergsridsport.se/images/free-coins-coin-master-daily_GM406889139.pdf
    • http://killebergsridsport.se/images/mcpe-master-hack-unlimited-coins-apk_GM406889139.pdf
    • http://killebergsridsport.se/images/freerobuxhack-us_GM431946152.pdf
    • http://killebergsridsport.se/images/how-to-get-100-free-spins-on-coin-master_GM406889139.pdf
    • http://killebergsridsport.se/images/coin-master-free-spin-and-coins-links-2021_GM406889139.pdf
    • http://killebergsridsport.se/images/free-coin-master-spins-2021_GM406889139.pdf
    • http://killebergsridsport.se/images/minecraft-xbox-360-free-download-code_GM479516143.pdf
    • http://killebergsridsport.se/images/legit-coin-master-hack-october-2021_GM406889139.pdf
    • http://killebergsridsport.se/images/free-robux-hack-2021_GM431946152.pdf
    • http://killebergsridsport.se/images/clean-master-coins-hack_GM406889139.pdf
    • http://killebergsridsport.se/images/free-spin-and-coin-links_GM406889139.pdf
    • http://killebergsridsport.se/images/links-for-coin-master-free-spins_GM406889139.pdf
    • http://killebergsridsport.se/images/free-shirt-templates-roblox_GM431946152.pdf
    • http://killebergsridsport.se/images/e-free-roblox_GM431946152.pdf
    • http://killebergsridsport.se/images/roblox-free-items_GM431946152.pdf
    • http://killebergsridsport.se/images/how-to-get-free-robux-no-survey_GM431946152.pdf
    • http://killebergsridsport.se/images/roblox-speed-hack_GM431946152.pdf
    • http://killebergsridsport.se/images/free-robux-no-human-verification_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004952.bin
042144803c26f01901cc1f2c78cdcdb3146599df1e64775508a90a503d2034af		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4952 24800 bytes
font_01_sfnt_off0000817b.bin
3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676		 pdf-font-stream PDF embedded font (sfnt) at offset 0x817B 2840 bytes
font_02_sfnt_off00008b2c.bin
d746a7c1c5cf5be311eddf8676cfb9402845d24e0d8fc8e00b27a1d9de62f851		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8B2C 18836 bytes

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