Malicious PDF — malware analysis report

Static analysis result for SHA-256 d16df1c4c46ab74e…

MALICIOUS

PDF

33.4 KB Created: 2021-06-19 13:17:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 8a148e686f4da1b655c8e5642f4b0095 SHA-1: c952eeffdda06af94175a6ba1b5ab462ed0edbf4 SHA-256: d16df1c4c46ab74e22551b8b374f92046a0a90fc0865430d4a8b9d7025c465d9
160 Risk Score

Malware Insights

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

The PDF document contains multiple links to known malicious redirectors and websites offering game hacks and cheats, such as 'roblox-hack-scripting-language-game-hack'. These links are designed to lure users into downloading further malicious content or visiting phishing sites. The ML classifier also flagged this PDF as malicious with high confidence.

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.co/app/431946152/roblox-hack-scripting-language-game-hack In PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/roblox-hack-download-unlimited-robux_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/free-wings-in-roblox-2021_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/byfanatics-co-free-robux_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/dominus-rex-for-free-roblox-extreme-hacks_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/minecraft-pe-hacks_GM479516143.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/yandex-disk-download-744d2021b6-robux-cheat-trs-rar-html_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/can-you-give-me-free-robux_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/free-robux-poster_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/mediafre-download-roblox-hack_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/roblox-free-clothes-hack-mobile_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/free-robux-co_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/robux-hack-that-works-when-you-use-card_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/get-free-roblox_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/roblox-hack-generator-online-no-survey_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/coin-master-ios-hack-download_GM406889139.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/hack-my-game-xyz-coin-master_GM406889139.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/how-to-hack-on-someones-roblox-account_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/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
font_00_sfnt_off00002be3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2BE3 22232 bytes
SHA-256: 5eb9f5e24f15ff3d4e41f28391479ecccad3aa05e593f9fa9289faab3996e330
font_01_sfnt_off00005d3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D3A 19196 bytes
SHA-256: 83d00db4499fea24293dacc96fd38d179e4385ae6ba29be9a1f097a528e4462c

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