Malicious PDF — malware analysis report

Static analysis result for SHA-256 a16c61544b0cd538…

MALICIOUS

PDF

34.4 KB Created: 2021-07-03 17:13:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 2bf2eef4629d41bd2b2344149baa70db SHA-1: ad1ff9d06331fe9f36fbfd70f2cc78b6542faac1 SHA-256: a16c61544b0cd538fbfb06143dae25e3b36e94231969c2a6252b0ab27300750f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure of game hacks and free currency to entice users to click on malicious links. The primary link directs to a known malicious redirector infrastructure, likely serving as a gateway to further malicious content or exploits. No scripts were extracted, but the PDF structure and embedded URLs strongly indicate a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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.tw/app/431946152/how-to-hack-peoples-roblox-accounts-game-hack In PDF document text
    • https://library.iuli.ac.id/repository/hacker-roblox-se-tlprter_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/roblox36com-free-robux_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/booga-booga-roblox-hack-code_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/coin-master-hack-version-2021-free-download_GM406889139.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/free-minecraft-bedrock-server-hosting_GM479516143.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/free-lua-7-exploit-roblox_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/youtube-free-robux-hack-2021-hurry-before-roblox-patches-it_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/coin-master-free-spins-promo-code_GM406889139.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/how-can-you-hack-into-someomes-account-in-roblox-2021_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/how-to-hack-roblox-tutorial-for-9-year-olds_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/robux-hack-infinite-robux_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/coin-master-free-stuff_GM406889139.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/free-roblox-redeem-cards-live_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/blox-pink-robux-free_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/coin-master-free-spin-daily-bonus_GM406889139.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/roblox-scripts-free_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/free-2021-robux_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/robux-online_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/coin-master-hack-tool-v1-9-download-free-pc_GM406889139.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/coin-master-daily-gift-free-spins-and-coins-link_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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_001_off00002bc6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2BC6 23336 bytes
SHA-256: 2bb98de87943aa4262cbd36b4530095b54e52f924f92f26ea8d4996d55bac4b7
font_01_sfnt_off00006079.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6079 19392 bytes
SHA-256: 455054d53819942057d20be51cc97c11c8340df0e33a1662ffdae35838096838

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