Malicious PDF — malware analysis report

Static analysis result for SHA-256 58f12835ae040121…

MALICIOUS

PDF

35.2 KB Created: 2021-07-06 01:12:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 785032f42e248fb8502b7c02a0f90ed1 SHA-1: 10bcf5bca75b5cba6c7e3f5b6fc8b159834f676e SHA-256: 58f12835ae040121da09dd5256e5739c373fa1490906b061433dee86809bffad
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to a known malicious redirector, disguised as lures for game hacks and free Robux. The document body and heuristics confirm the presence of these deceptive links, indicating a social engineering attack aimed at driving users to potentially malicious websites. No scripts were extracted, but the primary attack vector appears to be the embedded URLs leading to further compromise.

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/huskybuscom-free-robux-game-hack In PDF document text
    • http://digilib.akperkabpurworejo.ac.id/repository/windows-10-minecraft-free-with-java_GM479516143.pdfIn PDF document text
    • https://digilib.akperkabpurworejo.ac.id/repository/hack-vehicule-simulator-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id//repository/games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://digilib.akperkabpurworejo.ac.id/repository/roblox-restaurant-tycoon-hack-luac_GM431946152.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id/repository/free-roblox-pfp_GM431946152.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id/repository/free-robux-wihout-human-verification-or-downloads_GM431946152.pdfIn PDF document text
    • https://digilib.akperkabpurworejo.ac.id/repository/cheats-on-roblox-assasin_GM431946152.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id/repository/how-to-hack-someones-roblox-account-on-pc_GM431946152.pdfIn PDF document text
    • https://digilib.akperkabpurworejo.ac.id/repository/unused-free-robux-gift-cards_GM431946152.pdfIn PDF document text
    • https://digilib.akperkabpurworejo.ac.id/repository/how-to-hack-into-someones-roblox-account-2021_GM431946152.pdfIn PDF document text
    • https://digilib.akperkabpurworejo.ac.id/repository/its-free-real-estate-roblox-id_GM431946152.pdfIn PDF document text
    • https://digilib.akperkabpurworejo.ac.id/repository/roblox-com-for-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id/repository/minecraft-rtx-download-free_GM479516143.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id//repository/coin-master-free-redeem-code_GM406889139.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id//repository/coin-master-free-stuff_GM406889139.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id/repository/free-roblox-gear_GM431946152.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id//repository/download-hack-coin-master-apk_GM406889139.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id/repository/free-coin-app_GM406889139.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id/repository/roblox-arsenal-hacks-download_GM431946152.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id//repository/como-descargar-coin-master-hackeado_GM406889139.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_off0000309e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x309E 22836 bytes
SHA-256: 487cae8e41de863fcdfec032b55ffb6092e2d35732827db12575bafe954e9383
font_01_sfnt_off00006407.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6407 19324 bytes
SHA-256: fa71a02eff7d38361fd0194e941a22015f12e2817721f9ddba48d3de862e217b

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