Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2ed3ca21c3f4ec8…

MALICIOUS

PDF

32.9 KB Created: 2021-06-26 03:07:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: a2345b958e7c6ac5a67d68879fae5e02 SHA-1: ccd33332dfe65073f54a95fe22b954ce7e2038d2 SHA-256: a2ed3ca21c3f4ec84c3af7cb211e4f089952d2ecb0c3d4c69a7e5fdd25a26d32
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to a known malicious redirector infrastructure, specifically http://netcdn.co/app/431946152/free-roblox-skins-editor-game-hack. The document body and embedded links are designed as a lure for free game hacks and generators, likely to entice users to click through to a malicious site. The presence of multiple such links and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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.co/app/431946152/free-roblox-skins-editor-game-hack In PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-to-hack-in-arsenal_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/coin-master-spins-hack-2021_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/coin-master-hack-mod_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/coin-master-free-spins-and-coins-blogspot_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/dragon-ball-z-the-final-stand-roblox-hacks_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/pokemon-go-free-60fps_GM1094591345.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/can-you-make-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/coin-master-free-spin-and-coins-links_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/moon-active_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/minecraft-free-ios-2021_GM479516143.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/coinmaster-rewards_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/hack-coin-master-spin_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/optifine-mcpe_GM479516143.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/roblox-op-weapons-in-your-inventory-hack_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/coin-master-hack-mod-apk_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/comment-hack-sur-roblox_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/hack-sharkbite-roblox-cheat-engine_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/john-doe-roblox-hacker_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/pokemon-card-free-robux_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-roblox-avatar_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_off00002a45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2A45 22036 bytes
SHA-256: 7f01eda5562268f5cd18941393ca8c75e541acfa327e0e6b7f2bb22daa402058
font_01_sfnt_off00005b45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B45 19220 bytes
SHA-256: f143748dec718df7fd93c7da5aea5f7e96df819297a0aff70edd5277f99850cd

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