Malicious PDF — malware analysis report

Static analysis result for SHA-256 7da03127fd0f8a18…

MALICIOUS

PDF

46.7 KB Created: 2021-05-16 11:28:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 022c405de44e6e41e604c7c385ae2193 SHA-1: ca9e7aa27dff6febe9f4e3f6a6811dfcc63b5efc SHA-256: 7da03127fd0f8a180a8faf72d979515ba6751ae08f0e0c5333ae9e5ab4bcdbca
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to redirector domains, specifically advertising 'free generators' and 'game hacks' to entice users. The ML classifier also flagged this PDF as malicious. While no scripts were directly extracted, the embedded links and the nature of the lures suggest a phishing or social engineering attempt to lead users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

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-do-you-get-free-roebucks-game-hack In PDF document text
    • http://jasperfirstumc.com/images/free-girl-hair-roblox_GM431946152.pdfIn PDF document text
    • http://jasperfirstumc.com/images/get-free-roblox_GM431946152.pdfIn PDF document text
    • http://jasperfirstumc.com/images/coin-master-daily-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • http://jasperfirstumc.com/images/coin-master-hack-2021-download_GM406889139.pdfIn PDF document text
    • http://jasperfirstumc.com/images/minecraft-hacks-ps4_GM479516143.pdfIn PDF document text
    • http://jasperfirstumc.com/images/how-to-get-free-robux-without-offers_GM431946152.pdfIn PDF document text
    • http://jasperfirstumc.com/images/free-robux-games-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • http://jasperfirstumc.com/images/hacked-client-for-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • http://jasperfirstumc.com/images/coin-master-hacks-for-gold-cards_GM406889139.pdfIn PDF document text
    • http://jasperfirstumc.com/images/chisel-and-bits-mod-minecraft-pe_GM479516143.pdfIn PDF document text
    • http://jasperfirstumc.com/images/how-do-you-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://jasperfirstumc.com/images/how-to-get-free-spins-on-coin-master-without-waiting_GM406889139.pdfIn PDF document text
    • http://jasperfirstumc.com/images/80-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://jasperfirstumc.com/images/free-roblox-cards-pin-number_GM431946152.pdfIn PDF document text
    • http://jasperfirstumc.com/images/coin-master-game-hacking_GM406889139.pdfIn PDF document text
    • http://jasperfirstumc.com/images/free-minecraft-skin-creator_GM479516143.pdfIn PDF document text
    • http://jasperfirstumc.com/images/roblox-place-rewards_GM431946152.pdfIn PDF document text
    • http://jasperfirstumc.com/images/how-to-hack-roblox-for-robux_GM431946152.pdfIn PDF document text
    • http://jasperfirstumc.com/images/coin-master-hack-no-human-verification-2021_GM406889139.pdfIn PDF document text
    • http://jasperfirstumc.com/images/how-to-play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004de7.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4DE7 25644 bytes
SHA-256: 2d13010a62a3fc489ce10ba29512b90d01036e8c71f2b4f2824dd3b990007b40
font_01_sfnt_off00008728.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8728 3464 bytes
SHA-256: 8e24205afdd13dcdea98f8150ef77dee4030e0e50a7c748783d1b4598e034a20
font_02_sfnt_off0000935e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x935E 18572 bytes
SHA-256: 2ad3879de19ea59e0756335b6843f31f95ade4521f96ee42130de8f0f36df72d