Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f492f341223ab77…

MALICIOUS

PDF

35.2 KB Created: 2021-07-08 23:05:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 124f571fa92d1d34af2ef6d6a007e20e SHA-1: be7e4cd73b63ad6ed69cba18e01414e4dd6fb704 SHA-256: 6f492f341223ab77a28926b5c12050498958f63c1352dc3a246650d25c3df834
220 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document contains numerous links, including one pointing to a malicious redirector infrastructure. The document body and extracted links suggest a lure for game-related cheats and hacks, likely intended to lead users to malicious websites or downloaders. The presence of multiple PDF links also indicates a link farm strategy to distribute malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • 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.
  • 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.
  • 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 http://netcdn.tw/app/406889139/coin-master-daily-spins-and-coins-game-hack In PDF document text
    • http://lib.stimykpn.ac.id/repository/roblox-dayz-cheats_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/how-to-glitch-to-a-free-event-item-in-roblox_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/minecraft-download-free-download_GM479516143.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-wknd-strucid-alpha-roblox-lua-script_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/roblox-how-to-get-car-crushers-2-for-free_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-vehicle-simulator-roblox-2021_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/cool-roblox-shirt-templates-free-shipping_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-spin-coin-master-apk_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/how-to-get-free-robux-2021-xbox-one_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/how-o-use-cheat-engine-in-roblox-tycoon_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/minecraft-com-free_GM479516143.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-shirt-roblox_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/how-to-get-sentry-in-all-out-zombies-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-links-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/roblox-lumber-tycon-2-menu-no-cheat-engine_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/what-website-to-get-free-robux-ant_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/how-to-hack-roblox-with-notepad_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/codes-to-get-free-items-on-roblox_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/roblox-hacked-accounts-list-2021_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-robux-for-roblox-2021-genorat-no-human-verification_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_002_off000031c4.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x31C4 23108 bytes
SHA-256: c9858a46fcdbba6f8e1c0c504740fdb7d474c368943ad4c081e240ce9319aaac
font_01_sfnt_off000065c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65C0 18604 bytes
SHA-256: 5b3f6fef8f639ad268cfcf3b523e52e0206e273d10a1604539281e266c0a350b

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