Malicious PDF — malware analysis report

Static analysis result for SHA-256 2666866dac846ae4…

MALICIOUS

PDF

36.6 KB Created: 2021-06-28 00:59:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 75dfbc10ba72f35cdf21a622b7d41b37 SHA-1: cb69d1993a996d29f2e0a119f5072eb185bac629 SHA-256: 2666866dac846ae467e87a9ed858b397c127c456d99ebc359a8c5681bdc7a144
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure of free game currency and hacks to entice users to click on embedded links. The primary link, http://netcdn.co/app/431946152/how-to-get-free-robux-without-scams-2021-game-hack, is identified as a malicious redirector. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest a social engineering attack aimed at driving traffic to potentially malicious sites, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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.co/app/431946152/how-to-get-free-robux-without-scams-2021-game-hack In PDF document text
    • http://digilib-ppsunisma.ac.id/repository/minecraft-pocket-edition-download-free-pe-calculator_GM479516143.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/coin-master-online-hack-tool_GM406889139.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/hacks-on-roblox-build-a-boat-for-treasure_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/https-iosgodscom-topic-20214coinmasterhack_GM406889139.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/free-minecraft-servers-to-join_GM479516143.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/coin-master-500-free-spins_GM406889139.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/minecraft-free-no-download_GM479516143.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/http-coin-master-hack-club_GM406889139.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/roblox-free-download-2021_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/roblox-free-fgteev-t-shirt_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/microsoft-rewards-robux_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/pastebin-roblox-promocode-hack-2021_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/picture-roblox_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/can-you-get-banned-from-hacking-roblox_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/coin-master-hack-version-apk-download_GM406889139.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/redline-roblox-hack-download_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/call-of-robloxia-5-roblox-at-war-hack_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/how-to-get-minecraft-for-free-on-android_GM479516143.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/free-robux-no-download_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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000343f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x343F 22720 bytes
SHA-256: 69c40b864f1540ce756a5cb39fa53fedeaebc9bc71e361c802cbe0d27f749dc2
font_01_sfnt_off00006716.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6716 20128 bytes
SHA-256: a739581aa91381ffa2452445bed16c4e1a67a030c1f507d7ed103ec057cebd26

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