Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae1ab8cde9e0fc54…

MALICIOUS

PDF

34.8 KB Created: 2021-07-08 21:32:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: dc67a058032d96dcb2850a425937b2ee SHA-1: 1051105931b81a919748003890e1e4ce22eab7ee SHA-256: ae1ab8cde9e0fc54adf2289b0037a79923e384e4b4d40106961b9699b94098fe
142 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links to external websites, many of which are SEO-optimized PDF files related to game hacks and cheats. The primary lure appears to be 'free spins' for a game, directing users to a URL that likely serves as a gateway to a link farm. This suggests a tactic to drive traffic and potentially distribute further malicious content or engage in click fraud.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9983

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 http://netcdn.tw/app/406889139/2021-free-spins-on-coin-master-game-hack PDF link annotation
    • http://digilib.iailm.ac.id/repository/hack-rrobux-infinitos-en-roblox-pastebin_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/hacks-para-mining-simulator-roblox-tokens_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/hacks-for-roblox-island-royale-for-bucks_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/how-to-get-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/how-to-get-hacks-for-jailbreak-in-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/roblox-free-robux-games-that-work-2021_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-robux-no-verify_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/como-hackear-robux-en-roblox-con-cheat-engine-66_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/roblox-twisted-murderer-hack-script_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/hacking-esp-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/promo-codes-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/village-4-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/roblox-supreme-free_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/lucky-patcher-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/http-bitly-coin-master-free-2021-spins_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-robux-live-stream-every-5-seconds_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/free-coin-master-links_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/bloxland-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/roblox-old-avatar_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
font_00_sfnt_off000031f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31F9 22604 bytes
SHA-256: ed259a81b07ddca55a083f1d44d38e10ca9e3dd0740c2de35d6d66d9e95e7e44
font_01_sfnt_off0000647b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x647B 18576 bytes
SHA-256: f2fff24d8e1da03e7950bb9f46a8814e1d67753a91814bc950e94c645bcd301c

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