Malicious PDF — malware analysis report

Static analysis result for SHA-256 95a26e9db6a7dec6…

MALICIOUS

PDF

48.2 KB Created: 2021-05-17 05:12:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: abe89217cee40e5fa93a124ecdfdd182 SHA-1: bd2761f0758032d78fa399814b915ff3b0cc32c2 SHA-256: 95a26e9db6a7dec67956aaa34c1dcdb9389d75d72e12226cd83e2a0cb0e9e83a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, specifically advertising game hacks and free generators for popular games like Roblox and Coin Master. The document body, though partially corrupted, contains a primary URL that leads to a malicious redirector. The presence of embedded URLs and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful content or further stages of an attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8715

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/can-i-play-roblox-for-free-game-hack In PDF document text
    • http://aimp-market.ru/images/free-robux-survey_GM431946152.pdfIn PDF document text
    • http://aimp-market.ru/images/minecraft-java-edition-free-trial_GM479516143.pdfIn PDF document text
    • http://aimp-market.ru/images/roblox-hack-tool_GM431946152.pdfIn PDF document text
    • http://aimp-market.ru/images/coin-master-game-hacking-tricks_GM406889139.pdfIn PDF document text
    • http://aimp-market.ru/images/reddit-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://aimp-market.ru/images/free-robux-no-apps_GM431946152.pdfIn PDF document text
    • http://aimp-market.ru/images/how-to-hack-coin-master-game_GM406889139.pdfIn PDF document text
    • http://aimp-market.ru/images/games-on-roblox-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://aimp-market.ru/images/coinmaster-spin-ml-free_GM406889139.pdfIn PDF document text
    • http://aimp-market.ru/images/free-minecraft-account-reddit_GM479516143.pdfIn PDF document text
    • http://aimp-market.ru/images/roblox-prison-life-hack_GM431946152.pdfIn PDF document text
    • http://aimp-market.ru/images/free-robux-2021_GM431946152.pdfIn PDF document text
    • http://aimp-market.ru/images/free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://aimp-market.ru/images/free-robux-hacker-us_GM431946152.pdfIn PDF document text
    • http://aimp-market.ru/images/coin-master-hack-apk-no-survey_GM406889139.pdfIn PDF document text
    • http://aimp-market.ru/images/how-to-hack-robux_GM431946152.pdfIn PDF document text
    • http://aimp-market.ru/images/free-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://aimp-market.ru/images/free-coins-and-spins-2021_GM406889139.pdfIn PDF document text
    • http://aimp-market.ru/images/roblox-free-no-download_GM431946152.pdfIn PDF document text
    • http://aimp-market.ru/images/hacks-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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004772.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4772 25332 bytes
SHA-256: cf7ffade93eab466437276a5b22725e6ce9dda6821fc47ba9f80e5a56ae7ac4a
font_01_sfnt_off00008292.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8292 2820 bytes
SHA-256: 972979c3a46100cf5f8fd289bc6fbd2496ff75fec0e3f6753648c72ec6eba714
font_02_sfnt_off00008c2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C2C 5596 bytes
SHA-256: 9a13c2580265a78e8a7257496a31ee0055738af7e20a5661c2902efe4bf05ce5
font_03_sfnt_off000098d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x98D3 18512 bytes
SHA-256: e7c9a4fe6870a820981f50b5265581c9404087a1dcd1112df2882e4616f18a1c

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