Malicious PDF — malware analysis report

Static analysis result for SHA-256 177e2f1ecfceb3b0…

MALICIOUS

PDF

36.4 KB Created: 2021-07-05 18:21:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 6a626af5e43bb2d7ce88ecfd48889403 SHA-1: 0ebd8d0991f8204ffd4c1f112475f39958a6f2ad SHA-256: 177e2f1ecfceb3b0ea3d2a8aa56dba4a9c477b4a5ef78445e2ed93858a0240d5
220 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to redirectors and link farms, masquerading as game hacks and free item generators. The primary URL, http://netcdn.tw/app/431946152/secret-robux-hack-for-roblox-game-hack, is identified as a malicious redirector. The document body and heuristics indicate a lure for users interested in game exploits, likely leading to further malicious content or malware downloads.

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/431946152/secret-robux-hack-for-roblox-game-hack In PDF document text
    • http://digilib-ppsunisma.ac.id/repository/how-to-get-hacks-on-roblox_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/como-hackear-robux-en-roblox-2021-facil-y-rapido_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/robux-xyz_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/discord-king-of-queen-roblox-cheat_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/coin-master-free-spins-link-without-human-verification_GM406889139.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/flame-roblox-hack-download_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/impact-minecraft-hack_GM479516143.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/roblox-crashes-when-cheat-engine-open_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/free-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/minecraft-roblox-games-free_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/aim-hack-roblox-prison-royal_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/free-spins-and-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/free-giftcards-pin-on-roblox_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/how-to-hack-any-pokemon-into-project-pokemon-roblox_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/how-to-get-free-coins-roblox_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/coin-master-hack-unlimited-spins-apk-download_GM406889139.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/free-robux-games-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/how-to-prevent-free-model-hack-for-roblox-sudito_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/free-roblox-injector_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/gun-hacks-for-roblox-2021_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000035f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x35F0 23144 bytes
SHA-256: 56cc2c0d4577100ce5021d359760c4b392b76bc41bbebdb98821333c640937a3
font_01_sfnt_off000069f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69F3 18880 bytes
SHA-256: 4dc54b9a445178b71d76a42cd8107efaa52857bc3026ca70e19af28a88519498

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