Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e107fc58eb0ede7…

MALICIOUS

PDF

37.8 KB Created: 2021-06-30 00:36:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: f7ac8540c1a602a720202118b76d6ac9 SHA-1: d6db3bfbd44bd52c674bd5ddf1bf18cb567d2d88 SHA-256: 3e107fc58eb0ede7a6b1f1a95e8bed1dc3ce0b48f213c24466b737e6343ca7b2
220 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links designed to lure users to external sites, including a known malicious redirector. The document body and extracted links suggest a scam related to game hacks and in-game currency, likely intended to lead users to phishing or malware download pages. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

Heuristics 5

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/roblox-free-level-7-exploit-game-hack In PDF document text
    • http://mtsn-baranti.com/perpus/repository/minecraft-menu_GM479516143.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/coin-master-official-fan-page_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/free-spins-coin-master-links-no-human-verification_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/coin-master-game-free-download_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/coin-master-free-coins-2021_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/minecraft-items_GM479516143.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/coin-master-free-spins-link-whatsapp-group_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/free-coin-master-androd-cheats-2021_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/break-free-roblox_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/coin-master-hack-xyz_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/how-to-get-free-robux-com_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/coin-master-free-daily-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/reddit-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/how-to-downgrade-minecraft-pe_GM479516143.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/how-to-cheat-in-roblox-mining-simulator_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/coin-master-free-coins-and-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/coin-master-free-spins-link-2021-download_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/free-robux-games-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/free-roblox-toy-codes-not-used_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/coin-master-hack-without-human-verification-2021_GM406889139.pdfIn PDF document text
    • https://www.roblox.com/.IIn 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_off00003b97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3B97 22728 bytes
SHA-256: 1f934f833d7e3b347d496cd69de5ea3a6c8b82dd8712a03e1b1820b8a85cdfd0
font_01_sfnt_off00006e6a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E6A 19220 bytes
SHA-256: 360dd91df07deb14950273e3abcbb800600f1beede0b7ee9e564c551d03606e8

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