Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e88f51cd5cca364…

MALICIOUS

PDF

44.8 KB Created: 2021-04-27 01:24:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 5d88692ba22de3f4a54c597219c0c3da SHA-1: 59bb686c60c6b6b2d315aa075bfdbd6454b14278 SHA-256: 8e88f51cd5cca364c496ee75d72e8938d344169ac456ea3c32506494e0063e70
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one identified as a malicious redirector. The primary lure appears to be related to "game hacks" for Roblox, aiming to trick users into visiting potentially harmful websites. While no scripts were directly extracted, the PDF structure and embedded links suggest an attempt to redirect users to malicious infrastructure for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9857

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 https://netcdn.xyz/app/431946152/dumptruck-simulator-hack-roblox-game-hack In PDF document text
    • https://lib-stie.yai.ac.id/repository/how-to-hack-admin-commands-on-roblox-no-injector.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/unicorn-how-to-get-free-robux-youtube.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/how-to-get-free-money-in-restaurant-tycoon-roblox.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/roblox-hair-girl-free.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/fisicuffs-roblox-cheats.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/how-to-get-free-robux-2021-ios.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/can-you-buy-roblox-hacks.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/roblox-com-passwords-hack.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/discord-free-account-roblox.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/hack-my-roblox-account-freee-no-downloads.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004259.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4259 26900 bytes
SHA-256: c70a6ee241a4a1d8c21ae2bc4d2067581cc0a90cafb692996ef1c3ba48ae0953
font_01_sfnt_off00007f30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F30 3312 bytes
SHA-256: 40bd8eebcb3a0d68a8646f1930e84f30a44bfa48525263c6c528f0bc1e9c1677
font_02_sfnt_off00008a7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A7F 19152 bytes
SHA-256: d118d31d0bbacbf014efc3adc5a198ffa34e1743fd6d63be41e606e8c0fd8cc3

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