Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ae7aedf0af019e8…

MALICIOUS

PDF

32.1 KB Created: 2021-06-19 04:29:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: ece56f19d814050b94674ce96b291c02 SHA-1: 8754e93ced9d44931ca8395e17f6b899ed5098b3 SHA-256: 7ae7aedf0af019e8b3e26c3e4f7a6eb0a6cee2250bd7f774400f34b139829c8e
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 a known malicious redirector. The document body also contains the same URL and a call-to-action phrase, reinforcing the lure. While no scripts were extracted, the PDF structure and embedded URLs strongly suggest a phishing attempt to redirect users to potentially malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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/cheat-paintball-roblox-game-hack In PDF document text
    • http://berntfoto.dk/images/free-minecraft-skin-maker_GM479516143.pdfIn PDF document text
    • http://berntfoto.dk/images/minecraft-net-download-free_GM479516143.pdfIn PDF document text
    • http://berntfoto.dk/images/how-to-get-robux-on-roblox-for-free-ipad_GM431946152.pdfIn PDF document text
    • http://berntfoto.dk/images/coin-master-fun-free-spins_GM406889139.pdfIn PDF document text
    • http://berntfoto.dk/images/how-to-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://berntfoto.dk/images/best-hacking-software-for-roblox_GM431946152.pdfIn PDF document text
    • http://berntfoto.dk/images/shirt-creator-roblox-free_GM431946152.pdfIn PDF document text
    • http://berntfoto.dk/images/is-roblox-free-on-nintendo-switch_GM431946152.pdfIn PDF document text
    • http://berntfoto.dk/images/roblox-trainer-hack_GM431946152.pdfIn PDF document text
    • http://berntfoto.dk/images/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://berntfoto.dk/images/free-exploits-for-roblox_GM431946152.pdfIn PDF document text
    • http://berntfoto.dk/images/roblox-mobile-hacks-for-free_GM431946152.pdfIn PDF document text
    • http://berntfoto.dk/images/roblox-games-with-free-radio_GM431946152.pdfIn PDF document text
    • http://berntfoto.dk/images/coin-master-bonus_GM406889139.pdfIn PDF document text
    • http://berntfoto.dk/images/is-there-any-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://berntfoto.dk/images/roblox-promo-codes-for-free-robux_GM431946152.pdfIn PDF document text
    • http://berntfoto.dk/images/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://berntfoto.dk/images/can-you-actuallt-hack-robux_GM431946152.pdfIn PDF document text
    • http://berntfoto.dk/images/free-robux-with-cheat-engine_GM431946152.pdfIn PDF document text
    • http://berntfoto.dk/images/free-spins-coin-master-2021_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_off00002981.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2981 21780 bytes
SHA-256: 681909f1e0e964cb01476924bf0557892b02c6de8295ecd0e750416cb420d82e
font_01_sfnt_off0000593b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x593B 18844 bytes
SHA-256: db3f33c9d4cfd9f39e6bc494daa8790d6956db123c3648a9f2f8a0239348c946

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