Malicious PDF — malware analysis report

Static analysis result for SHA-256 72f6806500b846b1…

MALICIOUS

PDF

35.9 KB Created: 2021-07-03 17:02:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 882a28798992adc231b23430e7e1086d SHA-1: 4d05ac38f73b2eb0eee1f29ba379ed97b0c2c2ca SHA-256: 72f6806500b846b1d1af552a49c6c5074d29eaea2b09d04a72122ea9d9b84327
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to redirector domains, masquerading as 'free generators' or 'hacks' for popular games like Coin Master and Roblox. The primary lure URL, http://netcdn.tw/app/406889139/hack-coin-master-apk-32-game-hack, is flagged as malicious. The document body and embedded URLs suggest a social engineering tactic to trick users into visiting malicious sites, likely for further exploitation or malware delivery.

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/hack-coin-master-apk-32-game-hack In PDF document text
    • http://www.pspmrsmbpj.com/opac/repository/free-robux-quis_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmbpj.com/opac/repository/is-it-possible-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmbpj.com/opac/repository/free-followers-on-tiktok_GM835599320.pdfIn PDF document text
    • http://pspmrsmbpj.com/opac/repository/free-robux-with-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://pspmrsmbpj.com/opac/repository/how-to-get-free-items-on-roblox-with-inspect-element_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmbpj.com/opac/repository/boku-no-roblox-remastered-money-hack_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmbpj.com/opac/repository/coin-master-hack-mod-apk-2021_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmbpj.com/opac/repository/joining-groups-will-be-free-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmbpj.com/opac/repository/how-do-you-install-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://pspmrsmbpj.com/opac/repository/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://pspmrsmbpj.com/opac/repository/can-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmbpj.com/opac/repository/cheat-codes-roblox-xbox-one_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmbpj.com/opac/repository/www-roblox-com-to-purchase-more-robux-for-free_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmbpj.com/opac/repository/free-roblox-characters_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmbpj.com/opac/repository/cheat-roblox-lumber-tycoon-2-money-2021_GM431946152.pdfIn PDF document text
    • http://pspmrsmbpj.com/opac/repository/flame-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmbpj.com/opac/repository/roblox-parkour-hack-2021_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmbpj.com/opac/repository/free-robux-that-actually-works-2021_GM431946152.pdfIn PDF document text
    • http://pspmrsmbpj.com/opac/repository/how-to-hack-roblox_GM431946152.pdfIn PDF document text
    • http://pspmrsmbpj.com/opac/repository/coin-master-spins-for-free_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 6

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003413.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3413 23528 bytes
SHA-256: a7ba7488b9ea360e96d4e5a957b2747cd2a1cdab357273630a0a79458e79b49c
font_01_sfnt_off00006921.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6921 18480 bytes
SHA-256: 82043cd03fcb91cdae9089e060db25798972bbdf1481bdd3256787c2d2233951

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