Malicious PDF — malware analysis report

Static analysis result for SHA-256 7de0ea2568ea2e04…

MALICIOUS

PDF

35.3 KB Created: 2021-07-04 18:02:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: aa464cfa24d15e8e973a5cd3cb91a605 SHA-1: a607749cd6185fef3ba0560c26208f43c98c8bae SHA-256: 7de0ea2568ea2e045ece5018384268768149d67db0dd9868d7b3078c39307655
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links, including one to a known malicious redirector infrastructure at http://netcdn.tw/app/406889139/free-spins-october-28-2021-coin-master-game-hack. The document body and embedded links suggest a lure for game-related cheats or items, likely to trick users into visiting malicious sites. The presence of embedded URLs and the ML classifier strongly indicate malicious intent.

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/free-spins-october-28-2021-coin-master-game-hack In PDF document text
    • https://digilib.stimlog.ac.id/repository/free-coin-master-cards_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/how-to-fly-hack-in-roblox-prison-life_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/coin-master-free-spin-link-today-2021_GM406889139.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/how-to-cheat-in-dragon-ball-rage-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/coin-master-free-spins-link-download_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-group-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/dbor-roblox-level-hack_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/coin-master-100-spin_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/spins-coin-master_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-dominus-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/cool-hacks-for-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/how-to-hack-an-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-games-like-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/coin-master-daily-bonus_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-wings-promo-codes-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-aimbot-for-any-game-and-no-virus-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/roblox-csgo-skins-hack_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/master-coin-free-link_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-tiktok-fans-and-likes_GM835599320.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/collect-free-spin-linms-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_off0000316d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x316D 23028 bytes
SHA-256: 3db49f502b8dedf6de505863a2d19fb089d43290bf448157f6208362dda895dc
font_01_sfnt_off00006537.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6537 18944 bytes
SHA-256: 33a099d0463d5bcfa3a76cc4d65bb45a78717ed15b1179d1f103ad86d2662b61

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