Malicious PDF — malware analysis report

Static analysis result for SHA-256 bec8a87fb798723e…

MALICIOUS

PDF

34.2 KB Created: 2021-06-28 05:33:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: fdca06e6d7fe7126a1bd77f239ed7de4 SHA-1: 445805203ba87629536f5906bd8a458a7cef32ec SHA-256: bec8a87fb798723eefca9f1b559486827a6e18c3e7fe4813ceeaa17036fbeca5
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links designed to lure users into clicking on them by promising free game currency or hacks. These links redirect to malicious infrastructure, indicating a phishing or scam attempt. The ML classifier also flagged this PDF as malicious with high confidence.

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/rbxnow-gg-earn-free-robux-game-hack In PDF document text
    • http://sttlets.education/senayan/repository/free-robux-games-that-actually-work_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/free-spins-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/how-to-get-100-robux-for-free_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/roblox-present-free-object_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan//repository/robux-free-co_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/pubg-uc-no-human-verification_GM1330123889.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/coin-master-hack-no-verification-ios_GM406889139.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/how-to-hack-roblox-accounts-and-get-free-robux_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/free-roblox-premium_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/can-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/minecraft-free-download-linux_GM479516143.pdfIn PDF document text
    • http://sttlets.education/senayan//repository/coin-master-hack-online-generator-without-human-verification_GM406889139.pdfIn PDF document text
    • http://sttlets.education/senayan//repository/claim-robux_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/how-to-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/roblox-apocalypse-rising-spawn-hack-2021_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/cheat-engine-speed-hack-roblox-mac_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/how-to-get-real-robux_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/get-free-robux-real_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan//repository/robux-com-free-robux_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/cheat-rpg-world-roblox-script_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_off00002fe5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FE5 22140 bytes
SHA-256: 67d8bb5d82cccbadba0e21e9f103887be3719b084e2b3bd1a34a856c8e1c8ac7
font_01_sfnt_off0000612c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x612C 18880 bytes
SHA-256: 0d8f4bd9d692047268bad2263ce55befb702098a112474565ebb6bc3ff787910

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