Malicious PDF — malware analysis report

Static analysis result for SHA-256 725e3d424ea43907…

MALICIOUS

PDF

34.4 KB Created: 2021-07-03 12:05:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 4f211c9ceca8d6d5182a1362c94d3b63 SHA-1: 3a7f3640d2d691c933dda6c29ac71f2e6d2b02d8 SHA-256: 725e3d424ea4390764639a428233e9990348207444532ee348b2b8322ea1aae8
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links, including one identified as a malicious redirector. The primary lure appears to be related to game hacks and free in-game currency, aiming to trick users into visiting the malicious URL. No scripts were extracted, but the presence of malicious redirector links and the lure content strongly suggest a phishing or scam attempt.

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/479516143/minecraft-pe-apk-download-free-015-0-game-hack In PDF document text
    • https://fib.ub.ac.id/sac/repository/roblox-pink-free-robux_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/roblox-inappropriate-games_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/free-roblox-accounts-discord_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/how-to-get-free-robux-on-roblox-no-download_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/how-to-hack-a-person-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/best-roblox-exploits-2021-free_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/how-to-get-your-roblox-account-back-if-its-hacked_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/robux-hack-no-survey-no-verification_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/pokemon-go-free-install_GM1094591345.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/coin-master-free-spins-link-2021-ios_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/banning-hack-roblox_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/real-way-to-get-free-robux-2021-september_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/roblox-redeem-card-codes-free_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/how-to-get-free-robux-2021-hack-no-subscribing_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/outwitt-roblox-hack_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/apps-for-free-robux_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/roblox-shadowrun-free-pass-code_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/robux-app_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/hoew-to-fly-in-roblox-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_off00002fc6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FC6 21932 bytes
SHA-256: 909db9322014cf2ff929c4b5e4c26b6cff18004632ac01272d277decc40aaae1
font_01_sfnt_off0000604a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x604A 19488 bytes
SHA-256: 6ab0bb34bdf9936d74a5069a2fe515894561d4fac5c5667c4e53c9feabf663f7

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