Malicious PDF — malware analysis report

Static analysis result for SHA-256 d42b17a6bfdfca5a…

MALICIOUS

PDF

41.7 KB Created: 2021-05-11 16:35:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 0566e86c80ef99b238781e10bbd6305c SHA-1: d10c273bd70a7fb44c8c411b161e4e3daa58e8ee SHA-256: d42b17a6bfdfca5a93470b6d54a069557e4272680072f39d818e68c7108e3d5b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links designed to lure users with promises of game hacks and free in-game currency. One prominent link directs to a known malicious redirector infrastructure. The document's content and heuristic firings strongly suggest a phishing or scam attempt aimed at redirecting users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/406889139/how-to-win-attack-madness-in-coin-master-hack-game-hack In PDF document text
    • http://library.atim.ac.id/repository/minecraft-alt-accounts-free_GM479516143.pdfIn PDF document text
    • http://library.atim.ac.id/repository/roblox-free-hair-boy_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/free-robux-survey_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/microsoft-store-robux_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/coin-master-free-coins-and-spins-blogspot_GM406889139.pdfIn PDF document text
    • http://library.atim.ac.id/repository/how-to-get-free-robux-without-verifying-2021_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/how-to-get-free-clothing-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/games-in-roblox-that-give-you-robux_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/all-minecraft-handbooks_GM479516143.pdfIn PDF document text
    • http://library.atim.ac.id/repository/hacked-roblox-accounts-list_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/free-spins-and-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.atim.ac.id/repository/how-to-play-minecraft-for-free-on-computer_GM479516143.pdfIn PDF document text
    • http://library.atim.ac.id/repository/minecraft-115-2-hacks_GM479516143.pdfIn PDF document text
    • http://library.atim.ac.id/repository/roblox-avatar-editor-free_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/how-to-get-free-spins-in-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://library.atim.ac.id/repository/haktuts-2021-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://library.atim.ac.id/repository/free-robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/free-promo-codes-roblox_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/minecraft-free-edition_GM479516143.pdfIn PDF document text
    • http://library.atim.ac.id/repository/free-robux-generator-2021_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
stream_003_off000049f0.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49F0 23920 bytes
SHA-256: 72a87811970048bc6d76231b1288c34119f91de86c0c848c2b4192af16f5ec16
font_01_sfnt_off00008092.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8092 18252 bytes
SHA-256: ebc75091247f42f4d8f6f5328204ee4b219dff7698097371fec03a0e52319ffd