Malicious PDF — malware analysis report

Static analysis result for SHA-256 505102634abc88db…

MALICIOUS

PDF

34.3 KB Created: 2021-07-04 16:08:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-31
MD5: e1f3f56e4195635e9f8da9388d9c743b SHA-1: aec991a210563004b878aadb00e21056a75aeea5 SHA-256: 505102634abc88db59f6bd2ddf5ea040eccc34bb4bc5742816cc8b88c9d6f648
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document contains multiple links to known malicious redirectors, specifically promoting 'game hacks' and 'free generators' for popular games like Roblox. The primary lure URL is http://netcdn.tw/app/431946152/roblox-script-hacks-game-hack, which is flagged as malicious infrastructure. The document body and embedded URLs suggest a social engineering tactic to trick users into visiting these sites, likely leading to further malware downloads or exploitation.

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/431946152/roblox-script-hacks-game-hack In PDF document text
    • http://library.itekes-bali.ac.id/repository/how-to-get-video-star-hat-free-roblox_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/coin-master-free-spins-link-facebook-page_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/image-id-for-retail-tycoon-roblox-free_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/how-to-get-free-robux-easy_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-spins-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/roblox-prison-life-btools-hack_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/are-roblox-hacks-real_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/roblox-fly-hack_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/auto-jump-roblox-cheat_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/coin-master-cheats-2021_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/millions-of-free-robux_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/how-to-create-private-server-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-coin-master-spins-and-coins-for-daily_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/roblox-case-clicker-hack-2021_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/how-to-get-free-robux-on-roblox-zephplayz_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-robux-generator-xyz_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-sdcript-executer-for-roblox_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/como-hackear-roblox-en-pc-para-tener-ventajas_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-robux-master_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/hacked-via-roblox_GM431946152.pdfIn PDF document text
    • https://www.roblox.com/.IIn 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_off00003094.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3094 21848 bytes
SHA-256: 5946342e574c7e829be2579a56c1ee270f7edca6cf816bfc1893c6dbb9a6f05b
font_01_sfnt_off000060bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60BD 19056 bytes
SHA-256: d579aac1d1158a15ad46381a3b3d03b5c9b37299ce5790291e99ad749e5be703

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