Malicious PDF — malware analysis report

Static analysis result for SHA-256 7dd74569ac780e49…

MALICIOUS

PDF

35.1 KB Created: 2021-06-25 23:23:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-12
MD5: e4fa4c10fcbc70ac9a8c089c87f269b5 SHA-1: eee298a82f2a4fded7fd2c8272c538299e5f0e1e SHA-256: 7dd74569ac780e4916d0d17a1bc82e545012d9a2cb79381b48a6b91ccfeb4255
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to external websites, including a known malicious redirector. The document body and embedded links suggest a lure for free in-game currency or hacks, a common tactic for phishing or malware distribution. The ML classifier also strongly indicated maliciousness.

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/how-to-get-roebucks-on-roblox-for-free-game-hack In PDF document text
    • http://pustaka.bbppketindan.info/repository/hack-roblox-servers_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/free-robux-websites-that-actually-work_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/robux-free-c_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/free-spins-from-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/coin-master-free-account_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/get-free-robux-now_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/actual-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/how-to-get-robux-free-quik_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/minecraft-pocket-edition-free-apk_GM479516143.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/hack-version-of-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/hack-coin-master-for-free_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/coin-master-hack-tool-2021_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/abs-shirt-roblox-free_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/pokemon-go-free-accounts-2021_GM1094591345.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/roblox-hack-scripts-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/how-to-get-minecraft-coins-for-free_GM479516143.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/free-robux-roblox-promo-codes_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/coin-master-free-spins-daily-link-updated_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/coin-master-hack-mod-game-download_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_off00003169.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3169 22492 bytes
SHA-256: 6839e549f6f371e62020b290a9f5fcb67fd9eab64adbcf81ab4722586ae27413
font_01_sfnt_off00006375.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6375 19228 bytes
SHA-256: 15c051e7cb0297b0e07ea9e4b814ac242647678209d97ca04926fcf96b9785c9

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