Malicious PDF — malware analysis report

Static analysis result for SHA-256 05836a812299b53f…

MALICIOUS

PDF

32.1 KB Created: 2021-07-04 18:02:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-26
MD5: ec562d10a8e81fb0553f7169ba5b4476 SHA-1: 0cc600388d96b0981198d7752aeb608ececd6c18 SHA-256: 05836a812299b53fc98283feae636e4ec034ad0b363fae2d2529a5a78c25c059
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure of free Robux and game hacks to entice users to click on embedded links. The primary link directs to known malicious redirector infrastructure, which likely serves as a gateway to further malicious content or downloads. The ML classifier also strongly indicated maliciousness, supporting the conclusion that this document is designed for user deception and potential exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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.tw/app/431946152/free-robux-real-game-hack In PDF document text
    • http://stitqi.ac.id/website//repository/mcpe-master-coin-hack-apk_GM406889139.pdfIn PDF document text
    • http://stitqi.ac.id/website/repository/de-robux-hack-pw_GM431946152.pdfIn PDF document text
    • http://stitqi.ac.id/website//repository/www-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://stitqi.ac.id/website/repository/fbchampion-com_GM406889139.pdfIn PDF document text
    • http://stitqi.ac.id/website//repository/free-robux-without-verify_GM431946152.pdfIn PDF document text
    • http://stitqi.ac.id/website//repository/como-hackear-coin-master-espaol_GM406889139.pdfIn PDF document text
    • http://stitqi.ac.id/website/repository/robux-link_GM431946152.pdfIn PDF document text
    • http://stitqi.ac.id/website/repository/robuxy-com-generator_GM431946152.pdfIn PDF document text
    • http://stitqi.ac.id/website//repository/how-to-get-free-robux-without-any-verification_GM431946152.pdfIn PDF document text
    • http://stitqi.ac.id/website/repository/coin-master-free-link-facebook_GM406889139.pdfIn PDF document text
    • http://stitqi.ac.id/website/repository/coin-master-free-spins-link-2021-download_GM406889139.pdfIn PDF document text
    • http://stitqi.ac.id/website//repository/free-spins-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://stitqi.ac.id/website/repository/fan-page-coin-master_GM406889139.pdfIn PDF document text
    • http://stitqi.ac.id/website//repository/play-minecraft-online-free_GM479516143.pdfIn PDF document text
    • http://stitqi.ac.id/website/repository/coin-master-attack-block-hack_GM406889139.pdfIn PDF document text
    • http://stitqi.ac.id/website/repository/minecraft-pe-hacks-2021_GM479516143.pdfIn PDF document text
    • http://stitqi.ac.id/website/repository/minecraft-education-free_GM479516143.pdfIn PDF document text
    • http://stitqi.ac.id/website/repository/coin-master-daily-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • http://stitqi.ac.id/website//repository/coin-master-60-spins_GM406889139.pdfIn PDF document text
    • http://stitqi.ac.id/website/repository/coin-master-hack-app_GM406889139.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_off0000293f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x293F 21724 bytes
SHA-256: 3705d1ce6426373bf2ef3cda4833c549845ca72ace848505d3f377c845b8f275
font_01_sfnt_off0000593e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x593E 18788 bytes
SHA-256: 4bc1fb5241f7d1727492069c2276e888dd2add0fc79522b75a602c51baadbe08

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