Malicious PDF — malware analysis report

Static analysis result for SHA-256 eef28fbb8383b8b3…

MALICIOUS

PDF

46.4 KB Created: 2021-05-14 01:43:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 22675c9c5cc35464795819ffcf121251 SHA-1: 2165a7928a4c7b21d6da29e9403d43f4f32e6b94 SHA-256: eef28fbb8383b8b3f7cfda1d687cffe9104c68114e54bd3ab9e7f466f72abc3c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links, including one to a known malicious redirector infrastructure at `https://netcdn.xyz/app/406889139/coin-master-free-spins-link-facebook-game-hack`. The document body and embedded links suggest a lure for users seeking game-related cheats or free items, likely leading to further malicious content or downloads. The presence of embedded links and the nature of the lure indicate a phishing attempt, likely delivered as an attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

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/coin-master-free-spins-link-facebook-game-hack In PDF document text
    • https://gimnaziya6.kz/images/roblox-free-items-2021_GM431946152.pdfIn PDF document text
    • https://gimnaziya6.kz/images/minecraft-free-install_GM479516143.pdfIn PDF document text
    • https://gimnaziya6.kz/images/free-online-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://gimnaziya6.kz/images/free-robux-glitch_GM431946152.pdfIn PDF document text
    • https://gimnaziya6.kz/images/free-robux-today_GM431946152.pdfIn PDF document text
    • https://gimnaziya6.kz/images/free-robux-gift-card_GM431946152.pdfIn PDF document text
    • https://gimnaziya6.kz/images/village-3-coin-master_GM406889139.pdfIn PDF document text
    • https://gimnaziya6.kz/images/can-you-get-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • https://gimnaziya6.kz/images/roblox-games-with-free-vip-servers_GM431946152.pdfIn PDF document text
    • https://gimnaziya6.kz/images/minecraft-bedrock-download_GM479516143.pdfIn PDF document text
    • https://gimnaziya6.kz/images/hack-coin-master-game-apk_GM406889139.pdfIn PDF document text
    • https://gimnaziya6.kz/images/100-free-coin-master-spins_GM406889139.pdfIn PDF document text
    • https://gimnaziya6.kz/images/free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://gimnaziya6.kz/images/coin-master-daily-rewards-link_GM406889139.pdfIn PDF document text
    • https://gimnaziya6.kz/images/roblox-trolling_GM431946152.pdfIn PDF document text
    • https://gimnaziya6.kz/images/bloxpage-free-robux_GM431946152.pdfIn PDF document text
    • https://gimnaziya6.kz/images/roblox-bloxburg-hack_GM431946152.pdfIn PDF document text
    • https://gimnaziya6.kz/images/cm-daily-spins_GM406889139.pdfIn PDF document text
    • https://gimnaziya6.kz/images/roblox-help-free-robux_GM431946152.pdfIn PDF document text
    • https://gimnaziya6.kz/images/http-bit-ly-coin-master-hack_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
stream_003_off0000463f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x463F 24696 bytes
SHA-256: f55e131d44c32e7baf88a4d83c44c2a544c34e2ee7d028f299d3abd1f845628a
font_01_sfnt_off00007ec2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EC2 8676 bytes
SHA-256: e06aca5f85e50ae6cefda302c5299c18ab6d27c174f74f0bb0ee8efa7ccb4468
font_02_sfnt_off0000934c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x934C 18212 bytes
SHA-256: f7455627fca89e56f376775387bf90d900308051c02650cf5925308effc7bf6a

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