Malicious PDF — malware analysis report

Static analysis result for SHA-256 fee367adbbcd677f…

MALICIOUS

PDF

33.7 KB Created: 2021-07-04 08:07:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 405f8f7dae415d109b676c9beade72e7 SHA-1: e39d084bc7de0577a92c52b5d53c77b484793ae0 SHA-256: fee367adbbcd677fa94cf3eb374eae170a75258785f88145405fc94368e3b56a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to redirector infrastructure, specifically advertising 'free generator / game hack' lures. The primary malicious URL identified is http://netcdn.tw/app/479516143/free-mods-for-minecraft-pe-game-hack, which is flagged as a known malicious redirector. The document body and heuristics indicate a social engineering tactic to trick users into visiting these sites, likely leading to further malware downloads or scams.

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/479516143/free-mods-for-minecraft-pe-game-hack In PDF document text
    • http://library.unissula.ac.id/fk/repository/free-robux-group_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/free-tiktok-likes-trial_GM835599320.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk//repository/free-minecraft-account-list_GM479516143.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/link-coin-master_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/earn-robux_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/how-to-get-minecraft-for-free-on-mac_GM479516143.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/speed-hack-roblox-with-nopde-engine_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/free-pet-food-on-coin-master_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/get-free-25-robux_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/the-cheat-mac-roblox_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/best-free-spins-link-coin-master_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/hacks-piano-roblox_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/roblox-boku-no-legacy-hack_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/vehicle-simulator-roblox-cheat-scripts_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/roblox-free-groups-with-funds_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/multi-tool-hack-roblox_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/coin-master-heaven-daily-free-spins_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/how-do-you-hack-roblox-for-robux_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/can-you-get-free-robux-on-roblox_GM431946152.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_off00002fec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FEC 22208 bytes
SHA-256: 60c57f01b8e56edc81d82328a2b687118c1c607fea3b0c0e1fc969f50837415c
font_01_sfnt_off000060f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60F4 18324 bytes
SHA-256: 6654eaae5534462051d4d15c9b2a2db406e5011fb4f6a93ce1582a2079ce45bc

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