Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1e326face75e552…

MALICIOUS

PDF

34.0 KB Created: 2021-06-29 17:45:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-24
MD5: ce9bd0c0e6d8186c01b108c16ebe1f85 SHA-1: 4a42ddd3cae733ad22719849294e64c47bd602f1 SHA-256: d1e326face75e552cdc5e124af592f9f685ec0ac7eb3d5d6ca2e06bf9ee854bd
160 Risk Score

Malware Insights

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

This PDF document employs a lure related to free game currency and hacks, as indicated by the document body and multiple heuristic firings. It contains links to known malicious redirector infrastructure, specifically http://netcdn.co/app/431946152/gete-free-robux-game-hack, which likely serves as a gateway to further malicious content or malware. The presence of embedded URLs and the ML classifier's high confidence score support the assessment of malicious intent.

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.co/app/431946152/gete-free-robux-game-hack In PDF document text
    • http://mtsn-baranti.com/perpus/repository/roblox-apocalypse-rising-shenanigans-mod-cheat-code_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/how-to-get-tix-on-roblox-with-cheat-engine-64_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/game-give-free-robux_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/how-do-you-get-free-roblox_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/coin-master-free-coins-and-spins-2021_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/roblox-hack-robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/earn-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/seitama-roblox-free-shop-t-schirts_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/how-to-get-free-money-on-bloxburg-roblox_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/robux-generator-that-works_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/free-robux-codes-no-download-no-survey_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/roblox-gui-hacks_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/minecraft-esp_GM479516143.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/how-to-hack-to-go-through-walls-in-roblox_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/coin-master-free-spins-link-fb_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/how-to-get-free-robux-for-kids_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/how-to-get-free-robux-easy-2021_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/claim-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/hacks-for-roblox-couner-bloc_GM431946152.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_off00002f2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F2F 22636 bytes
SHA-256: 2cdf20ae2f5bb1b460f11e59d2607be6307221797033eb1198d52b6b937836ba
font_01_sfnt_off00006084.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6084 18820 bytes
SHA-256: 04d56578d6fa3a791f42370f0ef4c3dea66af1fdc194d67c4390c65d423efb6d

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