Malicious PDF — malware analysis report

Static analysis result for SHA-256 2274fb908a108baa…

MALICIOUS

PDF

33.4 KB Created: 2021-07-06 02:41:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 33f45b73428dbcb52d9aee7309ae206b SHA-1: 78cc98b5f614f04f1df859b9bc27741cbf10f029 SHA-256: 2274fb908a108baa94d89ae1e68b56026be7ae00da60e1dce331daa896f5aae8
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting game hacks and cheats. The primary lure, 'coin-master-hack-progamers-game-hack', is hosted on a known malicious redirector. While no scripts were explicitly extracted, the nature of the PDF and its embedded links suggests it is designed to trick users into visiting malicious sites, likely for credential harvesting or to download further malware. The ML classifier also strongly indicated maliciousness.

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.tw/app/406889139/coin-master-hack-progamers-game-hack In PDF document text
    • http://pustaka.ust.ac.id/repository/coin-master-free-spins-promo-code_GM406889139.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/how-to-install-wearedevs-hack-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/coin-master-free-coins-and-spins-app_GM406889139.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/cartoony-animation-free-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/roblox-free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/how-to-get-clothes-for-free-roblox-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/coin-master-hack-online-android_GM406889139.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/how-to-get-free-robux-no-hack-or-glitch_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/how-to-hack-roblox-to-get-admin-commands_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/minecraft-cheats-switch_GM479516143.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/how-to-get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/roblox-highschool-hack_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/yammy-xox-roblox-hacking_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/free-robux-instantly_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/dantdm-get-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/im-hacking-ur-account-roblox-music-code_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/roblox-lumber-tycoon-2-hack-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/roblox-create-a-shirt-free-shipping_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/how-do-you-get-free-daily-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/promo-codes-for-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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002dec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DEC 22296 bytes
SHA-256: a4eadbb2e5d3c7edd5733ac274dd6f02983f56abfb66cfcd547dd35e29e23eec
font_01_sfnt_off00005f7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F7D 18416 bytes
SHA-256: 5741a127261724fddf521fc94ebfc06f31583a26a9f94a4c147a021759ab8b48

Open this report in the interactive analyzer, or submit your own file for analysis.