Malicious PDF — malware analysis report

Static analysis result for SHA-256 496a1f61f7386429…

MALICIOUS

PDF

35.3 KB Created: 2021-07-03 16:08:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: fe7cc898f368d6ea953c6be375102dd3 SHA-1: 2289dd363ed91a8030e9184778460da58d189715 SHA-256: 496a1f61f73864297ee85690d46c2b00aea25a9bc0b4b9004487961ba84adebc
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'free game hacks' for popular mobile games. The primary lure URL is http://netcdn.tw/app/406889139/how-to-get-free-spins-on-coin-master-game-hack, which is flagged as a malicious redirector. The document body and embedded URLs suggest a social engineering tactic to trick users into visiting potentially harmful sites.

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/how-to-get-free-spins-on-coin-master-game-hack In PDF document text
    • http://www.mtshasyimasyari.com/__statics/gudangsoal/files/roblox-hack-game_GM431946152.pdfIn PDF document text
    • http://www.mtshasyimasyari.com/__statics/gudangsoal/files/free-robux-no-offewrs_GM431946152.pdfIn PDF document text
    • http://www.mtshasyimasyari.com/__statics/gudangsoal/files/coin-master-free-blogspot_GM406889139.pdfIn PDF document text
    • http://www.mtshasyimasyari.com/__statics/gudangsoal/files/juego-hackeado-de-coin-master_GM406889139.pdfIn PDF document text
    • http://www.mtshasyimasyari.com/__statics/gudangsoal/files/coin-master-free-spins-link-2021-blogger_GM406889139.pdfIn PDF document text
    • http://www.mtshasyimasyari.com/__statics/gudangsoal/files/free-robux-really-fast_GM431946152.pdfIn PDF document text
    • http://www.mtshasyimasyari.com/__statics/gudangsoal/files/roblox-mobile-hack_GM431946152.pdfIn PDF document text
    • http://www.mtshasyimasyari.com/__statics/gudangsoal/files/free-roblox-hack-us_GM431946152.pdfIn PDF document text
    • http://www.mtshasyimasyari.com/__statics/gudangsoal/files/roblox-buy-robux-for-free_GM431946152.pdfIn PDF document text
    • http://www.mtshasyimasyari.com/__statics/gudangsoal/files/how-to-get-free-robux-without-surveys_GM431946152.pdfIn PDF document text
    • http://www.mtshasyimasyari.com/__statics/gudangsoal/files/free-robux-with-tampermonkey_GM431946152.pdfIn PDF document text
    • http://www.mtshasyimasyari.com/__statics/gudangsoal/files/can-you-make-free-shirts-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.mtshasyimasyari.com/__statics/gudangsoal/files/free-roblox-ad-banner_GM431946152.pdfIn PDF document text
    • http://www.mtshasyimasyari.com/__statics/gudangsoal/files/how-to-use-cheat-engine-roblox_GM431946152.pdfIn PDF document text
    • http://www.mtshasyimasyari.com/__statics/gudangsoal/files/free-roblox-accounts-with-robux-2021_GM431946152.pdfIn PDF document text
    • http://www.mtshasyimasyari.com/__statics/gudangsoal/files/how-to-get-free-robux-no-survey-2021_GM431946152.pdfIn PDF document text
    • http://www.mtshasyimasyari.com/__statics/gudangsoal/files/coin-master-hack-xyz-download-free_GM406889139.pdfIn PDF document text
    • http://www.mtshasyimasyari.com/__statics/gudangsoal/files/free-rare-cards-for-coin-master-christmas_GM406889139.pdfIn PDF document text
    • http://www.mtshasyimasyari.com/__statics/gudangsoal/files/game-hack-36-roblox_GM431946152.pdfIn PDF document text
    • http://www.mtshasyimasyari.com/__statics/gudangsoal/files/coin-master-free-coins-and-spins-app_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_off00003382.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3382 23048 bytes
SHA-256: 072763c9c9cde4a0517c87cc55209078ea29d005c188b447fd8b8505bba2a941
font_01_sfnt_off0000675a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x675A 18336 bytes
SHA-256: f6486e4c00d3cdc8b5d1192946ddbf803be47e84f44f52a8e54ea271a052a700

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