Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae36e6f8d5b803ac…

MALICIOUS

PDF

33.3 KB Created: 2021-07-04 21:46:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 3526d1df96086f0d352f59671c4452fa SHA-1: af698d1d3a6b4890f68726aeb2e6a68bb693f120 SHA-256: ae36e6f8d5b803aca9b98e16aea0363feff569eda5873cef9e7031ba4dd42df4
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links and text that promote 'game hacks' and 'free generators', specifically directing users to a known malicious redirector. This lure is designed to trick users into clicking the link, likely leading to further malicious content or downloads. The ML classifier also strongly indicated maliciousness.

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/how-to-hack-minecraft-pe-game-hack In PDF document text
    • http://library.stieyapan.ac.id//repository/free-coin-master-cards_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/today-coin-master-spin-free_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/how-to-change-your-username-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/coin-master-free-spins-iphone_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/free-spins-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/minecraft-story-mode-free-download_GM479516143.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/village-3-coin-master_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/coin-master-daily-free-spins-link-today-twitter_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/roblox-dinosaur-world-progression-cheat_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/free-btools-roblox_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/coin-master-hack-2021-without-verification_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/free-spins-and-coins-coin-master-facebook_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/roblox-mods-hacks-money_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/coin-master-hack-tool-no-human-verification_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/roblox-piano-hack_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/free-spin-coin-master-app-download_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/coin-master-hack-root_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/free-coins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/free-robux-on-iphone_GM431946152.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_off00002f5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F5E 21712 bytes
SHA-256: 8b83380e9f50bdc777851c4f76bcce764a66e40458ea5fc590eff86ab44e4b56
font_01_sfnt_off00005ed6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5ED6 18488 bytes
SHA-256: 219457e29f33dfec07786a29e70830a20555f796e9e6bb3f533c171663b580ef

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