Malicious PDF — malware analysis report

Static analysis result for SHA-256 61bafddc1b312901…

MALICIOUS

PDF

35.1 KB Created: 2021-07-05 22:42:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 9df700d6b11718a14440ccd4720633fe SHA-1: d135fa541b8569eaff6b6327850c8a4e06f1e306 SHA-256: 61bafddc1b312901d37cbe7dde37847827a333f36c990bde84450a966fe7f5c2
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded URLs and a document body that explicitly lures users with promises of free game hacks and generators. The primary URL, http://netcdn.tw/app/479516143/how-to-make-your-own-minecraft-server-for-free-game-hack, is flagged as a redirector to such content. While no scripts were explicitly extracted, the PDF structure and embedded links suggest a phishing or scam attempt, likely leading to further malicious downloads or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • 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/479516143/how-to-make-your-own-minecraft-server-for-free-game-hack PDF link annotation
    • http://katalog.stikesmukla.ac.id/repository/roblox-free-clothes-hack_GM431946152.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/free-robux-with-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/cheat-codes-for-tuber-simulator-roblox_GM431946152.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/roblox-ability-spam-dq-hacks_GM431946152.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/roblox-hack-level-7_GM431946152.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/minecraft-bedrock-free-download-pc_GM479516143.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/http-bit-ly-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/free-robux-roblox-promo-codes_GM431946152.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/roblox-vip-cheats_GM431946152.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/roblox-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/how-to-het-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/free-coins-coin-master-link-today_GM406889139.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/free-robux-websites-2021_GM431946152.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/oprewards-com-roblox_GM431946152.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/free-roblox-gift-card-codes-that-haven-39_GM431946152.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/win-free-robux_GM431946152.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/free-robux-easy_GM431946152.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/coin-master-guide-to-free-spins-and-rewards_GM406889139.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/free-robux-kids-hack_GM431946152.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/how-to-get-free-robux-on-roblox-2021-pc_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_off00003316.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3316 22548 bytes
SHA-256: 0351ab152a9b315329928b989413f372583f4e5dc1f89c92964d9c4a8afd8a5d
font_01_sfnt_off0000654b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x654B 18748 bytes
SHA-256: 1b423bc8ae820a2c2eb73a9c501cf7699a28ccef7ea595eb2009fa638697dee6

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