Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c2613e8755a9474…

MALICIOUS

PDF

35.7 KB Created: 2021-07-05 16:31:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: e1e29a58373047b06f78bd721cda9ca2 SHA-1: 8bb961989cbe0f8c6b614c5c4fbc202f112be488 SHA-256: 1c2613e8755a9474fe77976490b7008b73d228227e258e8b659426e91c735e67
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, with a primary URL identified as a malicious redirector. This redirector lures users with promises of game hacks and rewards, likely leading to a phishing or malware download site. The ML classifier strongly supports the malicious nature of this PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • 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.
  • 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/microsoft-roblox-rewards-game-hack In PDF document text
    • http://library.itekes-bali.ac.id/repository/free-coins-and-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/is-there-a-free-version-of-minecraft_GM479516143.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/coin-master-game-for-pc-free-download_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/roblox-gift-card-for-free_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-robux-codes-generator-no-verification_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/unlimited-spin-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/apocalypse-rising-cheats-roblox_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/como-conseguir-robux-gratis-2021-sin-hacks_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/how-to-make-your-roblox-account-hackerproof_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-cute-outfits-on-royale-high-roblox_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/pokemon-go-basic-vs-premium-rewards_GM1094591345.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/pokemon-go-free-pokecoins_GM1094591345.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/coin-master-free-spins-link-2021-april_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/black-jeans-roblox-free_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-coins-and-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/hack-roblox-telechargement_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/roblox-cheat-engine-64-robux_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/pokemon-go-kanto-free-pass_GM1094591345.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/hack-coin-master-ios_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/roblox-deep-space-tycoon-hack-script-exploit_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_off00003265.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3265 22912 bytes
SHA-256: abe7931ba262d3160009af35e7557bff9908ebf2deb9488fb4402052594e71e9
font_01_sfnt_off000065eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65EB 19244 bytes
SHA-256: 15236a9164adcceeeabc7c563dc8d3c1b4330ca6f2c8a0eb4af9903fd5553319

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