Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c92aca11cb26a39…

MALICIOUS

PDF

34.0 KB Created: 2021-07-05 06:06:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 41f2f5b12b54a33c1d7496ac49f1a853 SHA-1: 4ce79262b836ed32a3d031b4ef58a5b7fce670d3 SHA-256: 9c92aca11cb26a398f7b1bb667be5559f81f3d01f251c26901783c8055f567b2
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting game hacks and free currency lures. The heuristic firings indicate these links are known malicious redirectors and the content is designed as a lure. The document's purpose is to trick users into visiting these malicious sites, likely for further exploitation or malware delivery.

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/tiktok-minecraft-hacks-game-hack In PDF document text
    • http://shoruq.sch.ae/userfiles/files/free-robux-meme_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/games-on-roblox-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/do-you-get-windows-10-minecraft-for-free-with-java_GM479516143.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/roblox-avatar-free_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/legit-coin-master-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/hacking-game-roblox_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/roblox-pizza-game-money-cheat_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/coin-master-free-spins-link-download-today_GM406889139.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/free-robux-no-human-verification-or-survey-or-download-2021_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/roblox-free-robux_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/hacks-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/how-to-hack-hats-in-roblox_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/free-robux-redeem-codes_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/free-roblox-clothing-group_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/inappropriate-roblox-games_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/free-spin-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/how-to-change-your-username-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/how-to-get-free-robux-and-tix-no-survey_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/can-you-give-me-robux_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/robux-hack-downlaod_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_off00003111.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3111 22488 bytes
SHA-256: 3ad1178c9be1effdd4a76ff79a742171b97da426929b3864c3835b64a474e8ef
font_01_sfnt_off000062a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62A9 18168 bytes
SHA-256: 49b148a5ca756e3f3293ae7356a748e2214796aae6d20bfd78280b7e22c0c315

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