Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9cdf858413617c6…

MALICIOUS

PDF

35.2 KB Created: 2021-07-04 14:11:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-14
MD5: 5e2c0b7175b2895da9c559946be72cc2 SHA-1: e424d849d208afad8bfbe4e3e655bf22fc8a5248 SHA-256: e9cdf858413617c6a36cb5f8b35f99365f1ba7f4c907ca0d17c2464dbee74721
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a common lure of free game currency and hacks to entice users. It contains multiple embedded URLs that redirect to malicious infrastructure, specifically a known malicious redirector. The document body and heuristics indicate a clear intent to lead users to potentially harmful content or further malicious downloads, likely as part of a phishing or scam campaign.

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-2021-spin-link-game-hack In PDF document text
    • http://digilib.stie-yppi.ac.id/repository/coin-master-hack-co_GM406889139.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/how-to-hack-roblox-hotel-elephant_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/hacking-prison-life-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/roblox-hack-999999-robux-android_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/getrobux-now_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/robux-claimer_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/how-to-hack-players-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/free-minecraft-maps_GM479516143.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/file-droper-roblox-hack_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/roblox-hack-online-roblox-hack-2021_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/coin-master-card-collection-link_GM406889139.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/free-roebucks-no-human-verification_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/can-you-give-limited-for-free-in-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/free-roblox-girl-clothes-codes_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/good-outfits-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/coin-master-free-spins-and-coins-link-blogspot_GM406889139.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/how-to-get-tons-of-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/how-to-get-free-tix-on-roblox-no-download_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/free-robux-no-scam-or-hack_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_off000032e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32E5 22796 bytes
SHA-256: 6b72f59dfed64880039b628ba2a1f182a0c73ba6be5f32bc1a70276d5a2e9092
font_01_sfnt_off00006592.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6592 18748 bytes
SHA-256: 96324e6ce0c81689c6b9eecc120e41c8c4a64b67d53a9c8495a7c5a7aa900936

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