Malicious PDF — malware analysis report

Static analysis result for SHA-256 72947ecdd67e4cf9…

MALICIOUS

PDF

35.0 KB Created: 2021-06-29 04:17:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21
MD5: c3bc79fc42b5758efb7ef1ab0f5c8306 SHA-1: cda19ccf60da241cb1e7a116ede5f6a0df88ab83 SHA-256: 72947ecdd67e4cf92e06f3c1ce9980585000f4bad8b270307c1dd0cb1519faef
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one pointing to a malicious redirector infrastructure associated with game hacks. The document body and extracted URLs suggest a lure for users seeking cheats or exploits, likely leading to further malicious content or downloads. No scripts were extracted, but the embedded URLs and heuristic firings strongly indicate a phishing or redirection attack.

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/roblox-sex-hack-cheat-engine-game-hack In PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/cheat-engine-roblox-robux-hack_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/roblox-arsenal-hack_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/roblox-prison-life-gui-hacks-pastebin_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/how-to-get-a-refund-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/minecraft-diamond-finder-hack_GM479516143.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/give-me-free-robux_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/rbx-website_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/free-backpacks-in-roblox_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/how-to-get-assasin-vip-for-free-roblox_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/roblox-jailbreak-hack_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/free-script-executor-level-7-roblox_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/free-coin-master-spins-for-today_GM406889139.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/roblox-medieval-warfare-reforged-hack_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/free-roblox-toy-codes-not-used_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/robux-cheat-pc_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/how-to-hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/coin-master-ids-for-free-spins_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003172.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3172 22564 bytes
SHA-256: d0b104bc851fc8aaf874b35867acec7d11a502a8d02b242235b5c92e2c1886a9
font_01_sfnt_off000063c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63C5 19044 bytes
SHA-256: c1cc00d3ac2211bf49964ebcbcef2afbe0645378b04d7e337726690e3028760e

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