Malicious PDF — malware analysis report

Static analysis result for SHA-256 457dda8ba7c8c2ca…

MALICIOUS

PDF

34.5 KB Created: 2021-07-01 22:17:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: bb1fb1c2fa4c6e1fbe634518b89c79ab SHA-1: 4f8f8b906b686d1c3fe2c0b93667b465db1ff384 SHA-256: 457dda8ba7c8c2ca718772cc59e2143f721e83d094a3d6e1423c667dd500f9ac
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that lead to a known malicious redirector, specifically advertising 'free Roblox exploits' and 'game hacks'. The document body and heuristics confirm the lure is for game-related cheats, and the primary URL points to a redirector likely serving further malicious content. No scripts were extracted, but the presence of malicious links and the lure suggest a phishing or social engineering 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.co/app/431946152/free-roblox-exploit-2021-game-hack In PDF document text
    • https://alimi.com.tw/upload/files/free-robux-no-survey_GM431946152.pdfIn PDF document text
    • https://alimi.com.tw/upload/files/free-robux-websites-that-work_GM431946152.pdfIn PDF document text
    • https://alimi.com.tw/upload/files/free-bane-mask-on-roblox_GM431946152.pdfIn PDF document text
    • https://alimi.com.tw/upload/files/free-spins-and-coins-from-coin-master-game_GM406889139.pdfIn PDF document text
    • https://alimi.com.tw/upload/files/coin-master-hack-account_GM406889139.pdfIn PDF document text
    • https://alimi.com.tw/upload/files/free-robux-hacks-no-verification_GM431946152.pdfIn PDF document text
    • https://alimi.com.tw/upload/files/minecraft-logo-maker-free_GM479516143.pdfIn PDF document text
    • https://alimi.com.tw/upload/files/coin-master-hack-download_GM406889139.pdfIn PDF document text
    • https://alimi.com.tw/upload/files/robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • https://alimi.com.tw/upload/files/roblox-hack-scripts-exploit_GM431946152.pdfIn PDF document text
    • https://alimi.com.tw/upload/files/robux-gift-card-free_GM431946152.pdfIn PDF document text
    • https://alimi.com.tw/upload/files/free-coin-master-cheats_GM406889139.pdfIn PDF document text
    • https://alimi.com.tw/upload/files/free-robux-sites-that-work_GM431946152.pdfIn PDF document text
    • https://alimi.com.tw/upload/files/minecraft-cheats-switch_GM479516143.pdfIn PDF document text
    • https://alimi.com.tw/upload/files/www-coin-master-hack-tk_GM406889139.pdfIn PDF document text
    • https://alimi.com.tw/upload/files/descargar-roblox-hack-robux-2021_GM431946152.pdfIn PDF document text
    • https://alimi.com.tw/upload/files/banning-hack-roblox_GM431946152.pdfIn PDF document text
    • https://alimi.com.tw/upload/files/roblox-walkspeed-cheat-engine_GM431946152.pdfIn PDF document text
    • https://alimi.com.tw/upload/files/free-robux-admin-panel_GM431946152.pdfIn PDF document text
    • https://alimi.com.tw/upload/files/how-to-noclip-roblox-with-cheat-engine_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 7

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_off000030da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30DA 21644 bytes
SHA-256: ac7daafd87e31404e169c901ca28623a442a56dd53613e60e64ed29394511473
font_01_sfnt_off000060a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60A6 19452 bytes
SHA-256: ae114c9a8e9216a73ec53f2de3fcf98c19cd1bb4b398288a927e29261ed4a168

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