Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d86f28aa270342f…

MALICIOUS

PDF

35.1 KB Created: 2021-07-08 23:14:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 6ebcf48ecbcb13b5690f95cd8f11e56d SHA-1: a182d4561deae70bb42e04429bd82664da2bee69 SHA-256: 0d86f28aa270342ff0af9ceccbe1bd4205a8fcd6237d2baba1b229e556e0253a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, disguised as generators for game hacks and currency. The primary lure is for 'Coin Master' related cheats. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest a redirection chain designed to lead the user to potentially malicious content or further downloads.

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/coin-master-cards-for-free-game-hack In PDF document text
    • http://shoruq.sch.ae/userfiles/files/coin-master-apk-hack-2021_GM406889139.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/free-800-robux_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/how-to-get-free-money-in-adopt-me-roblox_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/coin-master-free-coins-generator_GM406889139.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/how-to-play-minecraft-for-free-on-computer_GM479516143.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/free-robux-codes-2021-real_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/minecraft-pocket-edition-mods-for-free_GM479516143.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/free-links-for-free-coins-and-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/tiktok-free-view-iphone-horizontally_GM835599320.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/free-texture-packs-for-minecraft-pe_GM479516143.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/roblox-free-draw_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/roblox-vip-servers-for-free_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/how-to-get-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/coin-master-server-hack_GM406889139.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/free-robux-apk_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/promo-codes-for-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/free-stacked-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/roblox-jailbreak-hack-july-2021_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/free-robux-instant-inspect-element_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
stream_002_off0000331f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x331F 23128 bytes
SHA-256: 882e46ed969d51c9b155e84b0fcd74c2881c3aa628a66a0c0045e46857f1b1a5
font_01_sfnt_off000066e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66E9 18172 bytes
SHA-256: 51a6fa1d0322029b9e2ca075150f5a08b3c54d54cadd2367ada3da490e26397a

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