Malicious PDF — malware analysis report

Static analysis result for SHA-256 60681f282aa3de61…

MALICIOUS

PDF

33.8 KB Created: 2021-07-05 05:50:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 0f29c6a6ae112170fd601688f21a0de4 SHA-1: 13bf9509d64b4f114caefffd0c2fa375198a62a7 SHA-256: 60681f282aa3de6195274fb878fc4a386fb4119a5ca2085eaab37e99c1c679ae
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing for a game hack redirect lure, pointing to malicious infrastructure. The embedded URL and document body text reinforce this, indicating a phishing attempt to trick users into visiting a malicious site. No scripts were extracted, but the primary attack vector appears to be a malicious link within the document.

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-free-spins-2-5-2021-game-hack In PDF document text
    • http://perpus.ft.undip.ac.id/pustaka/repository/roblox-unboxing-simulator-hack_GM431946152.pdfIn PDF document text
    • http://perpus.ft.undip.ac.id/pustaka/repository/list-of-roblox-cheat-engines_GM431946152.pdfIn PDF document text
    • http://perpus.ft.undip.ac.id/pustaka/repository/free-rewardsrobux-webscom_GM431946152.pdfIn PDF document text
    • http://perpus.ft.undip.ac.id/pustaka/repository/how-to-upload-audio-for-free-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.ft.undip.ac.id/pustaka/repository/free-800-robux_GM431946152.pdfIn PDF document text
    • http://perpus.ft.undip.ac.id/pustaka/repository/get-free-promo-codes-for-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.ft.undip.ac.id/pustaka/repository/roblox-hack-menu-ios_GM431946152.pdfIn PDF document text
    • http://perpus.ft.undip.ac.id/pustaka/repository/pubg-uc-free-online_GM1330123889.pdfIn PDF document text
    • http://perpus.ft.undip.ac.id/pustaka/repository/jailbreak-cheat-codes-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.ft.undip.ac.id/pustaka/repository/roblox-free-online-game_GM431946152.pdfIn PDF document text
    • http://perpus.ft.undip.ac.id/pustaka/repository/admin-command-for-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.ft.undip.ac.id/pustaka/repository/pubg-uc-ykleme-midasbuy_GM1330123889.pdfIn PDF document text
    • http://perpus.ft.undip.ac.id/pustaka/repository/hey-google-how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.ft.undip.ac.id/pustaka/repository/get-free-robux-instantly_GM431946152.pdfIn PDF document text
    • http://perpus.ft.undip.ac.id/pustaka/repository/free-robux-pasteur-brie_GM431946152.pdfIn PDF document text
    • http://perpus.ft.undip.ac.id/pustaka/repository/mcpe-master-coins-hack-download_GM406889139.pdfIn PDF document text
    • http://perpus.ft.undip.ac.id/pustaka/repository/what-is-a-robux_GM431946152.pdfIn PDF document text
    • http://perpus.ft.undip.ac.id/pustaka/repository/roblox-hacks-s_GM431946152.pdfIn PDF document text
    • http://perpus.ft.undip.ac.id/pustaka/repository/minecraft-free-online_GM479516143.pdfIn PDF document text
    • http://perpus.ft.undip.ac.id/pustaka/repository/free-spins-and-coins-on-coin-master_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_off00002ef5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EF5 22164 bytes
SHA-256: 01fce5a5b424de16c118b9eb5fb9942623cf4e7bc10e8a0d2d0ab18bd33a79b3
font_01_sfnt_off0000601a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x601A 18712 bytes
SHA-256: 7cd48612045133ae85d6d1198e83582e127e1d3e6c66f6f02a894a96902def28

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