Malicious PDF — malware analysis report

Static analysis result for SHA-256 56dd1298cc62655d…

MALICIOUS

PDF

42.0 KB Created: 2021-05-02 06:01:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 0fcaa998e64991bcd663aaa4d16eaf10 SHA-1: 54286a672e8fd93c6f9f11e463f289fd9dbb350a SHA-256: 56dd1298cc62655dd9c5b8e3d0439e96bfbf96752d97bf4aeb111ea551e0a4c3
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one identified as a malicious redirector for a 'game hack' lure. The document body and embedded links suggest a social engineering attempt to trick users into visiting potentially harmful websites. While no scripts were directly extracted, the PDF structure and embedded links are indicative of malicious intent, likely to lead users to further malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9941

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 https://netcdn.xyz/app/431946152/how-to-get-robux-for-free-no-hacks-2021-game-hack In PDF document text
    • https://lib.stie-yai.ac.id/repository/roblox-diamond-hack.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/3-roblox-games-that-give-free-robux.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/free-robux-2021-no-human-verification-pc.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/roblox-player-cheating.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/roblox-inspect-element-console-hack.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/hacks-roblox.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/roblox-new-football-legends-hack.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/free-roblox-money-cheat-download.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/roblox-2021-unused-giftcards-for-free.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/roblox-cheats-for-tix.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
stream_003_off0000420e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x420E 26576 bytes
SHA-256: 747bbb6a05b8f23741bddc967f62154ad426afa06c5160c3afc1fd0f57b980f9
font_01_sfnt_off00007fe6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FE6 19084 bytes
SHA-256: f6560510135114acbffd7d331802f7115423f4a19d29c759d9fa7763e8c7e4a7