Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2b97a6a9284ac01…

MALICIOUS

PDF

49.1 KB Created: 2021-05-13 16:34:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: a6d2a21b3180d11ceee7c674f4b13320 SHA-1: 4369c5a1c2574a07b73a894255917c94ceae2bac SHA-256: b2b97a6a9284ac01153aa590258ac4b21ebac890acdf05c0ad525b153dfde1ba
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, specifically promoting 'free generator' or 'game hack' lures. The primary malicious URL identified is https://netcdn.xyz/app/431946152/robux-free-gift-card-game-hack. The presence of a visual download button further supports the deceptive nature of the document, aiming to trick users into clicking through to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9228

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.xyz/app/431946152/robux-free-gift-card-game-hack In PDF document text
    • http://korporacjaroma.pl/images/coin-master-freebies-2021_GM406889139.pdfIn PDF document text
    • http://korporacjaroma.pl/images/coin-master-free-spin-and-coin-link-app_GM406889139.pdfIn PDF document text
    • http://korporacjaroma.pl/images/coin-master-free-coins-and-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://korporacjaroma.pl/images/how-to-get-free-coins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://korporacjaroma.pl/images/what-is-robux-in-roblox_GM431946152.pdfIn PDF document text
    • http://korporacjaroma.pl/images/coin-master-hack-cheat-engine_GM406889139.pdfIn PDF document text
    • http://korporacjaroma.pl/images/coin-master-spins-hack_GM406889139.pdfIn PDF document text
    • http://korporacjaroma.pl/images/coin-master-hack-version-33-2_GM406889139.pdfIn PDF document text
    • http://korporacjaroma.pl/images/how-to-get-minecraft-for-free-on-xbox_GM479516143.pdfIn PDF document text
    • http://korporacjaroma.pl/images/op-rewards-free-robux_GM431946152.pdfIn PDF document text
    • http://korporacjaroma.pl/images/roblox-fun-robux_GM431946152.pdfIn PDF document text
    • http://korporacjaroma.pl/images/coin-master-com_GM406889139.pdfIn PDF document text
    • http://korporacjaroma.pl/images/coin-master-pc-hack_GM406889139.pdfIn PDF document text
    • http://korporacjaroma.pl/images/how-to-get-robux-fast_GM431946152.pdfIn PDF document text
    • http://korporacjaroma.pl/images/roblox-trolling_GM431946152.pdfIn PDF document text
    • http://korporacjaroma.pl/images/coin-master-hacks-no-human-verification_GM406889139.pdfIn PDF document text
    • http://korporacjaroma.pl/images/how-to-get-free-robux-games_GM431946152.pdfIn PDF document text
    • http://korporacjaroma.pl/images/free-draw-roblox_GM431946152.pdfIn PDF document text
    • http://korporacjaroma.pl/images/minecraft-java-edition-free-trial_GM479516143.pdfIn PDF document text
    • http://korporacjaroma.pl/images/is-it-possible-to-get-free-robux_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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004847.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4847 31820 bytes
SHA-256: 7cfbf7423ddf079819ec8ae090175ef4d7ade4d57aed175153705c5ffca54ef0
font_01_sfnt_off0000922f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x922F 2984 bytes
SHA-256: 889cfc2fd0afa9ea114d6666204c6ce0548d0aae2cba345827d317498c4c06bc
font_02_sfnt_off00009c5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9C5A 18640 bytes
SHA-256: 299b54e9041e0eacb2b5f4a1a09a85f1fb6c0d753f38c204f1d1c9ff56031a85

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