Malicious PDF — malware analysis report

Static analysis result for SHA-256 87f8da897d2d043e…

MALICIOUS

PDF

47.4 KB Created: 2021-06-10 22:27:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 7e3da77a3aa3c29f3001ca3d6e7162af SHA-1: d323afe73962befcf7ec07b4f22938ff7c9410a1 SHA-256: 87f8da897d2d043e44ea98ed48d59cc33750dfec5e022a79fe5352a74e96ecba
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, specifically advertising game hacks and generators for popular games like Roblox and Coin Master. The presence of a 'download button' heuristic further suggests a lure to download potentially malicious content. The document's content and heuristics strongly indicate a phishing or scam attempt designed to redirect users to malicious infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9769

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 https://netcdn.tw/app/431946152/mobihack-net-roblox-hack-game-hack In PDF document text
    • http://magnipsor.su/images/coin-master-free-spins-daily-2021_GM406889139.pdfIn PDF document text
    • http://magnipsor.su/images/hack-the-coin-master_GM406889139.pdfIn PDF document text
    • http://magnipsor.su/images/hack-roblox-2021_GM431946152.pdfIn PDF document text
    • http://magnipsor.su/images/how-to-hack-peoples-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://magnipsor.su/images/coin-master-free-spins-hack-but-no-surveys_GM406889139.pdfIn PDF document text
    • http://magnipsor.su/images/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://magnipsor.su/images/coin-master-card-collection-hack-2021_GM406889139.pdfIn PDF document text
    • http://magnipsor.su/images/minecraft-windows-10-hacked-client_GM479516143.pdfIn PDF document text
    • http://magnipsor.su/images/hack-coin-master-for-iphone_GM406889139.pdfIn PDF document text
    • http://magnipsor.su/images/how-to-get-minecoins-in-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://magnipsor.su/images/coin-master-hacks-for-cards_GM406889139.pdfIn PDF document text
    • http://magnipsor.su/images/roblox-god-mode-hack-2021_GM431946152.pdfIn PDF document text
    • http://magnipsor.su/images/coin-master-free-spins-hack-without-human-verification_GM406889139.pdfIn PDF document text
    • http://magnipsor.su/images/minecraft-alt-accounts-free_GM479516143.pdfIn PDF document text
    • http://magnipsor.su/images/how-to-make-your-own-minecraft-pe-server-for-free_GM479516143.pdfIn PDF document text
    • http://magnipsor.su/images/coin-master-free-spins-for-today_GM406889139.pdfIn PDF document text
    • http://magnipsor.su/images/roblox-2021-hack_GM431946152.pdfIn PDF document text
    • http://magnipsor.su/images/roblox-hacks-for-epic-minigames_GM431946152.pdfIn PDF document text
    • http://magnipsor.su/images/free-coin-and-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • http://magnipsor.su/images/coin-master-free-soins_GM406889139.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000506d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x506D 25920 bytes
SHA-256: 40e519a78d2f91ae8744edbd9f84d9159e495aa6a1b5fb4eccc19c709c136d65
font_01_sfnt_off00008b8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B8E 2832 bytes
SHA-256: 77ae1c4cffa647a8fd533dfa4102e94364989f9e80b9cd131876e9d1005899a2
font_02_sfnt_off0000953f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x953F 18768 bytes
SHA-256: 4038ce5e3e0945c6cd976405ec29b4e5783f739c83bcd68413f286c6b350b233

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