Malicious PDF — malware analysis report

Static analysis result for SHA-256 49a8001c90c950c3…

MALICIOUS

PDF

34.5 KB Created: 2021-07-03 18:17:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: b5e82ae2f457e4d45ecc5cfbafde5144 SHA-1: 2287e5a18bd9b44d4b5ffc89bed9a63645bf3a7a SHA-256: 49a8001c90c950c30783c1986829c349e85b79f6252e941e01cbb43b46100e02
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links, including one to a known malicious redirector, that promise free game currency or hacks for popular games like Coin Master and Roblox. The document body and heuristics indicate a lure designed to trick users into visiting these sites, likely leading to further malicious content or downloads. No scripts were extracted, but the embedded URLs and redirector findings strongly suggest a phishing or scam campaign.

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/406889139/fan-page-coin-master-game-hack In PDF document text
    • http://www.middleeastautorepair.com/uploaded_files/userfiles/files/robux-com-free-robux_GM431946152.pdfIn PDF document text
    • http://www.middleeastautorepair.com/uploaded_files/userfiles/files/coin-master-hack-club_GM406889139.pdfIn PDF document text
    • http://www.middleeastautorepair.com/uploaded_files/userfiles/files/free-spins-in-coin-master-without-human-verification_GM406889139.pdfIn PDF document text
    • http://www.middleeastautorepair.com/uploaded_files/userfiles/files/roblox-com-robux_GM431946152.pdfIn PDF document text
    • http://www.middleeastautorepair.com/uploaded_files/userfiles/files/salvage-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://www.middleeastautorepair.com/uploaded_files/userfiles/files/orewards-com-free-robux_GM431946152.pdfIn PDF document text
    • http://www.middleeastautorepair.com/uploaded_files/userfiles/files/roblox-i-ts-free_GM431946152.pdfIn PDF document text
    • http://www.middleeastautorepair.com/uploaded_files/userfiles/files/beyond-cheat-roblox_GM431946152.pdfIn PDF document text
    • http://www.middleeastautorepair.com/uploaded_files/userfiles/files/how-to-get-free-robux-fast-and-easy_GM431946152.pdfIn PDF document text
    • http://www.middleeastautorepair.com/uploaded_files/userfiles/files/free-robux-no-verify-2021_GM431946152.pdfIn PDF document text
    • http://www.middleeastautorepair.com/uploaded_files/userfiles/files/case-clicker-cheats-roblox_GM431946152.pdfIn PDF document text
    • http://www.middleeastautorepair.com/uploaded_files/userfiles/files/free-robux-with-no-survey_GM431946152.pdfIn PDF document text
    • http://www.middleeastautorepair.com/uploaded_files/userfiles/files/how-to-speed-hack-on-roblox-apocalypse-rising_GM431946152.pdfIn PDF document text
    • http://www.middleeastautorepair.com/uploaded_files/userfiles/files/coin-master-free-coins-links-2021_GM406889139.pdfIn PDF document text
    • http://www.middleeastautorepair.com/uploaded_files/userfiles/files/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://www.middleeastautorepair.com/uploaded_files/userfiles/files/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://www.middleeastautorepair.com/uploaded_files/userfiles/files/get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.middleeastautorepair.com/uploaded_files/userfiles/files/is-minecraft-education-edition-free_GM479516143.pdfIn PDF document text
    • http://www.middleeastautorepair.com/uploaded_files/userfiles/files/coin-master-hack-2021-ios_GM406889139.pdfIn PDF document text
    • http://www.middleeastautorepair.com/uploaded_files/userfiles/files/how-do-i-get-free-robux-without-downloading-anything_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
stream_002_off00003258.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3258 22452 bytes
SHA-256: bc4c488af33ac10acc23c8003c7729fc73b62bfa7144f3c22da9b47556809985
font_01_sfnt_off0000647c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x647C 18152 bytes
SHA-256: dc65fc03521f6741f12ad44add688acee0e4503760684e09f17d44e8145a27b5

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