Malicious PDF — malware analysis report

Static analysis result for SHA-256 55e2d633a5bbc815…

MALICIOUS

PDF

34.4 KB Created: 2021-07-04 21:30:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: be6c90f184b16a708e4af437130038be SHA-1: 1a5de250887f37bb9ef7aed4987a15a842beee24 SHA-256: 55e2d633a5bbc8159748b2c4670fac0232ca3ec92d89f39fc7712877b9ee8921
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'game hacks' and 'free coins'. The heuristic firings indicate that the PDF is designed to lure users into clicking these links, which likely leads to further malicious content or exploits. No scripts were extracted, but the presence of malicious redirector links and the ML classification strongly suggest a phishing or social engineering attack.

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-coins-and-spins-online-tool-game-hack In PDF document text
    • http://mtsn-baranti.com/perpus/repository/roblox-free-without-sign-in_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/roblox-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/roblox-crash-checked-cheat-engine_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/free-roblox-svg_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/coin-master-hack-spins-apk_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/how-to-get-vip-for-free-vampire-hunters-2-roblox_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/coin-master-new-cards-hack_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/if-i-uninstall-minecraft-can-i-reinstall-it-for-free_GM479516143.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/huskybuscom-free-robux_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/minecraft-windows-10-edition-free-download_GM479516143.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/roblox-royalty-free-music_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/roblox-svg-free_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/roblox-hexus-free-download_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/coin-master--hack_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/how-do-we-get-free-robux_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/roblox-base-wars-free-admin_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/get-free-clothes-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/roblox-hack-2021-no-survey_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/free-robux-co_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/roblox-group-free-robux_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_off00003174.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3174 22364 bytes
SHA-256: f70bdf07a438e4ff12a568c99904118999b1496b39bce2812375c0d2584bb7c9
font_01_sfnt_off0000633d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x633D 18424 bytes
SHA-256: 66696e999b5158da7aa9caca59ffbcc81dde9073c548c9bc2007b11eafc4ccbc

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