Malicious PDF — malware analysis report

Static analysis result for SHA-256 3612f867d7df1ccd…

MALICIOUS

PDF

34.9 KB Created: 2021-06-28 07:27:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 13b483390bed8a979465644f9c48eccd SHA-1: 68738e810f4927647d010645480202895e87af2c SHA-256: 3612f867d7df1ccd8c16df6f0b2439f37ff806d681a466f17822afc3ebe43a7b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF document contains a lure for a "Roblox Boxing Simulator Hack" and includes a link to a known malicious redirector infrastructure. The document body also contains a call-to-action phrase, suggesting a social engineering attempt to drive users to click the malicious link. The ML classifier strongly flagged this PDF as malicious, indicating a high likelihood of it being used to deliver a second-stage payload or phish for user credentials.

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/roblox-boxing-simulator-hack-game-hack In PDF document text
    • https://opac.umrah.ac.id/repository/roblox-controversy_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-gears-on-roblox_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-roblox-outfits-2021_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/pants-roblox-free_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/infinite-jump-roblox-free-download_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/coin-master-hack-blog_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/how-to-get-free-cards-sets-for-coin-master_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-robux-generator-without-human-verification_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/how-to-get-free-robux-only-1-step_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/synlapse-roblox-free-download_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/roblox-system_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/cheat-engine-bypass-for-roblox_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/get-a-free-ps-on-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/httpswwwurcouponsdealcom202103coinmasterfreespinandcoinlinkshtml_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/how-does-a-roblox-account-get-hacked_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/obby-gives-you-free-200k-robux_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/hack-coin-master-apk-2021_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/roblox-deadzone-remade-hack_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002f6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F6B 22772 bytes
SHA-256: a822180bc09982920529e95c0dbabeea89ca7f409ba88031d0119e6cfe6fcd18
font_01_sfnt_off000062c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62C0 19280 bytes
SHA-256: 0e34a49dffd73a148fdb3a9a0dbe904dc8ffd4b9d88917f3bfb0611592b59c42

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