Malicious PDF — malware analysis report

Static analysis result for SHA-256 6afbed84c71a2c02…

MALICIOUS

PDF

32.6 KB Created: 2021-07-03 23:34:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 7841e8ca92983dbaaef605a6decb9e8d SHA-1: 02a0709484b37cf60f44adfe7989d0ea7037adbf SHA-256: 6afbed84c71a2c02cb198a09d28637ed27a048bf3e3c7a4ac641541054cf554d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, disguised as 'game hacks' and 'generators' for popular games. The document body explicitly contains the URL http://netcdn.tw/app/431946152/robux-win-game-hack, which is identified as a malicious redirector. This suggests the document's primary purpose is to trick users into visiting this malicious site, likely to download further malware or engage in phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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/431946152/robux-win-game-hack In PDF document text
    • https://opac.heritagejkt.org/repository/how-to-hack-into-accounts-roblox_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org//repository/pig-master-free-coins-and-spins_GM406889139.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/master-coin-hack-mod_GM406889139.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/robuxlove-net-free-robux_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/inject-hackcom-roblox-app_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/3-games-that-will-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org//repository/moonactive-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/what-is-e-free-on-roblox_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org//repository/minecraft-pc-free_GM479516143.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/free-20210-robux_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/coin-master-game-hacking-tricks_GM406889139.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/como-generar-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/how-to-get-free-roebucks-on-roblox_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org//repository/how-to-hack-someones-roblox-account-2021_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/roblox-cheat-engine-hacks-2021_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/minecraft-clipart-free_GM479516143.pdfIn PDF document text
    • https://opac.heritagejkt.org//repository/descargar-coin-master-hackeado_GM406889139.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/coin-master-100-spin_GM406889139.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/how-to-get-free-robux-in-meep-city-2021_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/free-gift-card-roblox-giveaway-live-youtube-2021-june_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

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_off0000298a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x298A 22288 bytes
SHA-256: 056dc7499157b54206905f50e567b9f26870a3c68c95975fdd545d2ab987b827
font_01_sfnt_off00005b0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B0B 18868 bytes
SHA-256: b7886f95459917ce9979ba5e88b3e17eca9525d8377d3e247e9b6fd470620a4b

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