Malicious PDF — malware analysis report

Static analysis result for SHA-256 5fed227514ec4c29…

MALICIOUS

PDF

46.4 KB Created: 2021-06-09 14:46:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-23
MD5: 8244f1024cf61e46ec4b69f476cf7ce7 SHA-1: 5458f7057b2032c9496f06f6bc9b18c7c101d6c7 SHA-256: 5fed227514ec4c29b6ea85645a697cd5716a2a78e63275a6d2382758a00392e9
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to redirector infrastructure, specifically promoting 'game hacks' and 'free generators' to lure users. The heuristic firings indicate these links point to known malicious redirectors. While no scripts were explicitly extracted, the PDF structure and embedded links suggest a social engineering tactic to drive users to potentially malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9832

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.tw/app/431946152/tuto-comment-hack-jailbreak-roblox-sur-pc-game-hack In PDF document text
    • http://www.library.umbjm.ac.id/repository/free-robux-pin-codes_GM431946152.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/mcmaster-club-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/easy-robux-hack_GM431946152.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/how-to-get-the-guest-boby-for-free-in-roblox_GM431946152.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/minecraft-mods-download-free_GM479516143.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/microsoft-rewards-roblox_GM431946152.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/roblox-promo-code-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/hack-file-roblox_GM431946152.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/free-robux-gift-card-codes_GM431946152.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/free-robux-ad_GM431946152.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/minecraft-maps-pe-free-download_GM479516143.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/free-robux-no-human-verification-or-survey-or-download_GM431946152.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/roblox-hack-mod-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/all-coin-master-spin-link-and-free-download_GM406889139.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/coin-master-free-cards-link-2021_GM406889139.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/roblox-hack-2021_GM431946152.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/free-pokemon-go-accounts-level-30_GM1094591345.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/free-coin-master-gifts_GM406889139.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/mcpe-master-hack-unlimited-coins-download_GM406889139.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_off00005429.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5429 25916 bytes
SHA-256: f6542ee95b600cf3a9154c6deab1a6b73d3cc8cccfaf49bcaf4fcd22e4269cb9
font_01_sfnt_off0000909e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x909E 19128 bytes
SHA-256: 3f70a46a74b438805120f08de6e363e9b8bb93c4db432cbaef9f9dc1cdba2753

Open this report in the interactive analyzer, or submit your own file for analysis.