Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d0708fdec2f2fc1…

MALICIOUS

PDF

43.9 KB Created: 2021-05-10 21:57:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 7e390fce061bf91873cddbbe0f7287b1 SHA-1: 6abea9e98e4a73b9883d7ef86cd5eef2effc9447 SHA-256: 9d0708fdec2f2fc1f96fe837a4ddfab62257af948751d058baccf18520abd40e
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains multiple links to known malicious redirectors and infrastructure, disguised as "game hacks" and "free generators". The document body and embedded links promote downloading applications, likely to deliver a second-stage payload. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9648

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/406889139/download-coin-master-apk-hack-game-hack In PDF document text
    • https://elite-house.su/images/free-robux-games-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • https://elite-house.su/images/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://elite-house.su/images/free-executor-roblox_GM431946152.pdfIn PDF document text
    • https://elite-house.su/images/is-there-any-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://elite-house.su/images/how-to-get-free-robux-website_GM431946152.pdfIn PDF document text
    • https://elite-house.su/images/free-robux-thumbnail_GM431946152.pdfIn PDF document text
    • https://elite-house.su/images/roblox-hack-site_GM431946152.pdfIn PDF document text
    • https://elite-house.su/images/free-roblox-card_GM431946152.pdfIn PDF document text
    • https://elite-house.su/images/how-to-get-free-robux-without-download-apps-or-survey_GM431946152.pdfIn PDF document text
    • https://elite-house.su/images/free-robux-hack-us_GM431946152.pdfIn PDF document text
    • https://elite-house.su/images/roblox-free-clothes-hack_GM431946152.pdfIn PDF document text
    • https://elite-house.su/images/minecraft-windows-10-key-free_GM479516143.pdfIn PDF document text
    • https://elite-house.su/images/free-minecraft-hacks_GM479516143.pdfIn PDF document text
    • https://elite-house.su/images/coin-master-hack_GM406889139.pdfIn PDF document text
    • https://elite-house.su/images/free-roblox-accounts-with-robux-that-work-not-banned_GM431946152.pdfIn PDF document text
    • https://elite-house.su/images/easy-robux-today-com_GM431946152.pdfIn PDF document text
    • https://elite-house.su/images/daily-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://elite-house.su/images/coin-master-daily-free-spins-link-app_GM406889139.pdfIn PDF document text
    • https://elite-house.su/images/coin-master-free-spins-daily-link-game-mod_GM406889139.pdfIn PDF document text
    • https://elite-house.su/images/minecraft-games-free-to-play-online_GM479516143.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_off00004804.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4804 24024 bytes
SHA-256: 96f8887b3a55103aac86015d39ac2ced2db59d1c987a65ab51bdf5438dfa2dde
font_01_sfnt_off00007e7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E7A 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off0000882c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x882C 18472 bytes
SHA-256: 889c97ae1e8c5f6287d7e9e9a77de81d4c7f2c24e7ca8efa3945bbdf42481e01

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