Malicious PDF — malware analysis report

Static analysis result for SHA-256 01ace17364c30d66…

MALICIOUS

PDF

34.2 KB Created: 2021-07-07 21:23:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 16aa836a9c9b26ad79f945ea377bd333 SHA-1: 44ea86ab41e0229a3bdff9595ccad83372ab2797 SHA-256: 01ace17364c30d66fdd1915262867eca70192298a7010c86d0e6b14a6f743ebf
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirectors, masquerading as free game hacks and generators. The primary redirect URL is http://netcdn.tw/app/479516143/minecraft-free-no-virus-game-hack, which is designed to lure users into downloading further malicious content. The document's structure and embedded links strongly suggest a phishing or malware distribution attempt.

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/479516143/minecraft-free-no-virus-game-hack In PDF document text
    • http://elib.upiyptk.ac.id/opac//repository/free-generator_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/pokemon-go-free-quest-rewards_GM1094591345.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac//repository/coin-master-hack-2021-no-human-verification_GM406889139.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/tiktok-free-qr-code_GM835599320.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/roblox-money-hack-rocitizens_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/shadow-raid-cheats-roblox_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac//repository/free-spins-and-coins-blogspot-coin-master_GM406889139.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac//repository/earn-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac//repository/get-free-lives-on-coin-master_GM406889139.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/minecraft-coins-free_GM479516143.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/hack-coin-master-for-free_GM406889139.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/how-to-make-a-group-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac//repository/free-robux-with-no-verification_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/coin-master-free-link-2021_GM406889139.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/how-to-hack-roblox-on-mobile_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac//repository/free-spins-coin-master-app-ios_GM406889139.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/como-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/coin-master-daily-free-spins_GM406889139.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/free-robux-game-uncopylocked_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/free-minecraft-skins-java_GM479516143.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_off000031b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31B1 22280 bytes
SHA-256: 53a41ff9153d58366469b3f3c3bdd83c4fa657b82761fa219e10b0b0daa09926
font_01_sfnt_off000062f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62F1 18272 bytes
SHA-256: bf996c983106b115fd3bd2435b69e5e984477bc90884b46e6e1560a3bcd683fa

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