Malicious PDF — malware analysis report

Static analysis result for SHA-256 323ab160f48cc704…

MALICIOUS

PDF

35.8 KB Created: 2021-06-30 05:01:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-23
MD5: 809182023a7859074d15bcb6f5312f85 SHA-1: 39e10080f441f65ded88453496a912958500a41f SHA-256: 323ab160f48cc7043b3f525edc560a2d06be7459162f338bef4a1222dcef8bb9
220 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links disguised as 'game hacks' and 'free generators' for popular games like Roblox and Coin Master. These links redirect to a known malicious infrastructure, indicating a phishing or scam attempt. The document body and heuristics suggest a lure to trick users into visiting these sites, likely for credential harvesting or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/how-to-hack-someones-acount-in-roblox-game-hack In PDF document text
    • https://stikes-alinsyirah.ac.id/perpustakaan/repository/hacks-roblox_GM431946152.pdfIn PDF document text
    • https://stikes-alinsyirah.ac.id/perpustakaan/repository/free-spins-generated-from-coin-master_GM406889139.pdfIn PDF document text
    • https://stikes-alinsyirah.ac.id/perpustakaan/repository/is-it-possible-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://stikes-alinsyirah.ac.id/perpustakaan/repository/where-can-i-get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://stikes-alinsyirah.ac.id/perpustakaan/repository/coin-master-hack-2021-link_GM406889139.pdfIn PDF document text
    • https://stikes-alinsyirah.ac.id/perpustakaan/repository/how-to-hack-accounts-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://stikes-alinsyirah.ac.id/perpustakaan/repository/minecraft-pocket-edition-free-apk_GM479516143.pdfIn PDF document text
    • https://stikes-alinsyirah.ac.id/perpustakaan/repository/oh-yeah-yeah-shirt-on-roblox-free_GM431946152.pdfIn PDF document text
    • https://stikes-alinsyirah.ac.id/perpustakaan/repository/can-you-give-me-free-robux_GM431946152.pdfIn PDF document text
    • https://stikes-alinsyirah.ac.id/perpustakaan/repository/roblox-hack-android-oyun-club_GM431946152.pdfIn PDF document text
    • https://stikes-alinsyirah.ac.id/perpustakaan/repository/doctor-louie-roblox_GM431946152.pdfIn PDF document text
    • https://stikes-alinsyirah.ac.id/perpustakaan/repository/how-to-hack-roblox-to-get-robux_GM431946152.pdfIn PDF document text
    • https://stikes-alinsyirah.ac.id/perpustakaan/repository/free-roblox-clothing-2021_GM431946152.pdfIn PDF document text
    • https://stikes-alinsyirah.ac.id/perpustakaan/repository/coin-master-daily-free-spin-app_GM406889139.pdfIn PDF document text
    • https://stikes-alinsyirah.ac.id/perpustakaan/repository/roblox-snow-shoveling-simulator-hack_GM431946152.pdfIn PDF document text
    • https://stikes-alinsyirah.ac.id/perpustakaan/repository/make-free-robux_GM431946152.pdfIn PDF document text
    • https://stikes-alinsyirah.ac.id/perpustakaan/repository/get-free-robux-here000webhostapp_GM431946152.pdfIn PDF document text
    • https://stikes-alinsyirah.ac.id/perpustakaan/repository/20210-robux-promo-code-free_GM431946152.pdfIn PDF document text
    • https://stikes-alinsyirah.ac.id/perpustakaan/repository/how-do-you-get-free-robux-without-pastibein-raw_GM431946152.pdfIn PDF document text
    • https://stikes-alinsyirah.ac.id/perpustakaan/repository/how-to-hack-tower-of-hell-in-roblox_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_off000034e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x34E7 22220 bytes
SHA-256: 47d5c84efff2a62df16f971b2cb8d6fb87a16aa1765fb409fc45f4e03a9c5476
font_01_sfnt_off0000661d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x661D 19324 bytes
SHA-256: 6ad15ecf9106bae6f915d7011c6f5a3f83e0d8c2c4b92b82e15158716bfcd5ae

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