Malicious PDF — malware analysis report

Static analysis result for SHA-256 4fd3d6a9dad6ff52…

MALICIOUS

PDF

35.5 KB Created: 2021-06-26 00:01:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: f87f032f1bf411740919d3fc66a43df5 SHA-1: 76b3527d0ed5482b2f3ba4992d2010c4dcef1e2c SHA-256: 4fd3d6a9dad6ff52c3b02061deb43f009b8e1fd7b5595c2c2841ce8ea5b321ff
180 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to websites offering free game hacks and currency, such as 'how-to-get-war-machine-in-roblox-for-free-game-hack'. One of the embedded URLs, http://183.91.70.11/repository/roblox-robux-hack-download-ios_GM431946152.pdf, uses an IP address directly, which is a common tactic for malicious sites. The document body and heuristics indicate a lure for game-related exploits, likely leading to a scam or malware download.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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.
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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/how-to-get-war-machine-in-roblox-for-free-game-hack In PDF document text
    • http://183.91.70.11/repository/roblox-robux-hack-download-ios_GM431946152.pdfPDF link annotation
    • http://183.91.70.11/repository/free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://183.91.70.11/repository/is-minecraft-free-on-computer_GM479516143.pdfIn PDF document text
    • http://183.91.70.11/repository/robux-free-co_GM431946152.pdfIn PDF document text
    • http://183.91.70.11/repository/free-coin-and-spin-for-coin-master_GM406889139.pdfIn PDF document text
    • http://183.91.70.11/repository/free-robux-without-survey_GM431946152.pdfIn PDF document text
    • http://183.91.70.11/repository/are-there-and-free-safe-roblox-exploits-v3rmillion_GM431946152.pdfIn PDF document text
    • http://183.91.70.11/repository/roblox-jailbreak-speed-hack-2021_GM431946152.pdfIn PDF document text
    • http://183.91.70.11/repository/100-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://183.91.70.11/repository/is-there-any-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://183.91.70.11/repository/free-robux-hack-2021-with-no-oprewards_GM431946152.pdfIn PDF document text
    • http://183.91.70.11/repository/coin-master-free-spins-cheat-deutsch_GM406889139.pdfIn PDF document text
    • http://183.91.70.11/repository/coins-for-pokemon-go-free_GM1094591345.pdfIn PDF document text
    • http://183.91.70.11/repository/how-to-get-free-robux-without-tix_GM431946152.pdfIn PDF document text
    • http://183.91.70.11/repository/dungeon-quest-cheats-roblox_GM431946152.pdfIn PDF document text
    • http://183.91.70.11/repository/coin-master-game-free-play-online_GM406889139.pdfIn PDF document text
    • http://183.91.70.11/repository/2021-roblox_GM431946152.pdfIn PDF document text
    • http://183.91.70.11/repository/coin-master-daily-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://183.91.70.11/repository/apps-for-free-robux_GM431946152.pdfIn PDF document text
    • http://183.91.70.11/repository/how-to-use-roblox-hack-scripts-free_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_off00003220.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3220 22444 bytes
SHA-256: a8bea0ff5f40e93cbbcb0b9422effaa98cdde52ca72c83cd42329ecaabc94258
font_01_sfnt_off00006436.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6436 19600 bytes
SHA-256: 0433e1be3067e90beb95c7fcd4ceaecf7a342115d468fad05fb7bfc98a56336c

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