Malicious PDF — malware analysis report

Static analysis result for SHA-256 b8e2fbcbd4956923…

MALICIOUS

PDF

34.9 KB Created: 2021-07-05 20:40:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-23
MD5: f222440057e6d3f90789b7166b1b1ceb SHA-1: c03a04f20e7fb18a7af70c527c682d84f1518138 SHA-256: b8e2fbcbd49569234c08c6026e61190ef028d036bd7fa7d25502e30ee50099dd
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one pointing to known malicious redirector infrastructure at http://netcdn.tw/app/406889139/coin-master-free-2021-game-hack. This URL is presented as a 'free generator / game hack' lure, aiming to trick users into clicking through to potentially malicious sites. The document body and embedded URLs reinforce this theme with references to game hacks and free in-game currency.

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/406889139/coin-master-free-2021-game-hack In PDF document text
    • https://library.institutpendidikan.ac.id/repository/minecraft-hacked-apk_GM479516143.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/how-to-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/free-robux-completing-offers_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/how-to-get-free-robux-on-phone_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/free-codes-for-roblox-2021_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/minecraft-reach-hack_GM479516143.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/coin-master-tips_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/roblox-catalog-free-dominus_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/hack-xp-net-coin-master_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/roblox-rules_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/roblox-free-body_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/roblox-lumber-tycoon-2-money-hack-2021_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/roblox-tab-font-free-download_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/can-pokemon-go-free-pokeballs_GM1094591345.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/free-game-packs-for-coin-master_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/bloxpage-free-robux_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/roblox-redwood-prison-free-gamepass_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/daily-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/coin-master-card-collection-hack-apk_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_off000030cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30CD 23248 bytes
SHA-256: 9e0c799f6f9e5095db5550e6e89723d37b96844bb28784cdd261149a6ac2c5e8
font_01_sfnt_off0000651f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x651F 18400 bytes
SHA-256: 0cc69a54ece3ed14f72d45612a229cad946be49a09675100e3633ee455bac280

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