Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1967e31cf3c8d42…

MALICIOUS

PDF

50.3 KB Created: 2021-05-16 05:51:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: bfceb013b04dc14c50c567940bfdfda7 SHA-1: 164c69a25486f45f2bf9d73263b4a7c48951ec15 SHA-256: d1967e31cf3c8d42d3da353530a3578140e796c8c58df1ebf4ca1a5081c02e2c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, specifically advertising free game hacks and items. The ML classifier also flagged this PDF as malicious. The presence of these links suggests the document is designed to lead users to potentially harmful websites, likely for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9349

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/roblox-free-hair-boy-game-hack In PDF document text
    • http://www.arichuna.com/images/files/is-minecraft-education-edition-free_GM479516143.pdfIn PDF document text
    • http://www.arichuna.com/images/files/can-i-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
    • http://www.arichuna.com/images/files/free-robux-exe_GM431946152.pdfIn PDF document text
    • http://www.arichuna.com/images/files/get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.arichuna.com/images/files/robux-hack-free-robux_GM431946152.pdfIn PDF document text
    • http://www.arichuna.com/images/files/minecraft-bedrock-edition-hacks_GM479516143.pdfIn PDF document text
    • http://www.arichuna.com/images/files/free-robux-safe_GM431946152.pdfIn PDF document text
    • http://www.arichuna.com/images/files/can-u-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.arichuna.com/images/files/coin-master-pc-hack-tool_GM406889139.pdfIn PDF document text
    • http://www.arichuna.com/images/files/free-robux-site_GM431946152.pdfIn PDF document text
    • http://www.arichuna.com/images/files/coin-master-links-free-spins_GM406889139.pdfIn PDF document text
    • http://www.arichuna.com/images/files/coin-master-online-free-spin_GM406889139.pdfIn PDF document text
    • http://www.arichuna.com/images/files/free-2021-robux_GM431946152.pdfIn PDF document text
    • http://www.arichuna.com/images/files/get-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.arichuna.com/images/files/how-to-get-free-robux-without-verification_GM431946152.pdfIn PDF document text
    • http://www.arichuna.com/images/files/coin-master-freebies_GM406889139.pdfIn PDF document text
    • http://www.arichuna.com/images/files/free-robux-gift-card-codes-2021_GM431946152.pdfIn PDF document text
    • http://www.arichuna.com/images/files/cm-spin-link_GM406889139.pdfIn PDF document text
    • http://www.arichuna.com/images/files/roblox-zone-free-robux_GM431946152.pdfIn PDF document text
    • http://www.arichuna.com/images/files/robux-hacks-2021_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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000049ce.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49CE 26588 bytes
SHA-256: 5376db1a5e1cbbf466cd1314cb5588f431c7635c1d0affd98fa494ff790f3bef
font_01_sfnt_off000086e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86E4 8132 bytes
SHA-256: e6d68e720ea5acf9dccbf7ffde18db6f65c62a99ab7725aa43e30329033a7787
font_02_sfnt_off0000a1d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA1D0 18476 bytes
SHA-256: 3fabddb91e4eaecc087c17f99b1c80be23524e7eab6cbec0e1034232c0cbaaac

Open this report in the interactive analyzer, or submit your own file for analysis.