Malicious PDF — malware analysis report

Static analysis result for SHA-256 75478ea7743f1267…

MALICIOUS

PDF

34.6 KB Created: 2021-07-06 06:41:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: a94f7e5134d858da73dcdeaaa7c4c958 SHA-1: ad0477e2957cfe76cbff2958d8c77cfb954b54b2 SHA-256: 75478ea7743f1267801578741b7595834720d2d7d444e677c63763aebe595f73
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one at http://netcdn.tw/app/479516143/minecraft-pe-free-download-ios-game-hack, which is identified as a malicious redirector. The document body and heuristics suggest a lure for game-related cheats or generators, aiming to trick users into visiting malicious sites. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly indicate a phishing or redirection attack.

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-free-download-ios-game-hack In PDF document text
    • http://pustaka.ust.ac.id/repository/cheat-enging-for-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/50-free-spins-coin-master-links_GM406889139.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/coin-master-rewards-app_GM406889139.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/how-to-get-free-items-on-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/haktuts-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/free-robux-generator-no-verification_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/how-to-get-free-roblox-hair_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/free-obc-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/roblox-studio-mac-download-free_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/free-robux-glitch-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/pop-slots-free-vegas-casino-slot-machine-game-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/free-coin-link-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/how-to-hack-coin-master-game-ios_GM406889139.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/static-moonactive-net-free-spins_GM406889139.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/coin-master-hack-ios-2021_GM406889139.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/big-brother-roblox-hack_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/roblox-prison-life-v202-hack-download_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/coin-master-free-spin-and-coins-links_GM406889139.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/freerobux-hack-us_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/boku-no-roblox-legendary-hack_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_off0000310b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x310B 22580 bytes
SHA-256: f435425a1b025bffd4fd88fd351509e1557a4b2043ee35a6432999d0cfb16d3a
font_01_sfnt_off00006319.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6319 18732 bytes
SHA-256: 0ef0170b3aa10b556c40e7423f5151d4b707722862692f9b8f0c765a1993a10a

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