Malicious PDF — malware analysis report

Static analysis result for SHA-256 db94841bdb6f8583…

MALICIOUS

PDF

26.3 KB Created: 2021-05-10 18:05:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-25
MD5: f64fa7fcc6735ef1afb9822ad0c27b67 SHA-1: 48be7499692e5103808c1ce80c4fa00eab1d66b6 SHA-256: db94841bdb6f8583629b7d08a43ad105f7fcec1880bd0631851bd8f4b2b5adad
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links designed to lure users into clicking on them by promising free game currency or hacks. The primary link redirects to malicious infrastructure known for distributing malware. The document body and embedded links strongly suggest a phishing or scam attempt, likely to deliver a secondary payload or lead users to a credential harvesting site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9809

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/robux-hack-tools-game-hack In PDF document text
    • http://s-punkt-objects.de/images/coin-master-free-rare-cards_GM406889139.pdfIn PDF document text
    • http://s-punkt-objects.de/images/blogger-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://s-punkt-objects.de/images/how-to-get-robux-without-paying_GM431946152.pdfIn PDF document text
    • http://s-punkt-objects.de/images/gamehunters-coin-master_GM406889139.pdfIn PDF document text
    • http://s-punkt-objects.de/images/free-robux-generator-2021-no-survey_GM431946152.pdfIn PDF document text
    • http://s-punkt-objects.de/images/2021-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://s-punkt-objects.de/images/coin-master-game-download-free_GM406889139.pdfIn PDF document text
    • http://s-punkt-objects.de/images/how-to-hack-any-roblox-account_GM431946152.pdfIn PDF document text
    • http://s-punkt-objects.de/images/coin-master-free-food_GM406889139.pdfIn PDF document text
    • http://s-punkt-objects.de/images/coin-master-free-coins-no-human-verification_GM406889139.pdfIn PDF document text
    • http://s-punkt-objects.de/images/rare-free-links-to-coin-master_GM406889139.pdfIn PDF document text
    • http://s-punkt-objects.de/images/roblox-apocalypse-rising-hack_GM431946152.pdfIn PDF document text
    • http://s-punkt-objects.de/images/coin-master-free-spins-hack-but-no-surveys_GM406889139.pdfIn PDF document text
    • http://s-punkt-objects.de/images/microsoft-rewards-robux_GM431946152.pdfIn PDF document text
    • http://s-punkt-objects.de/images/robux-hack-me_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_off00001b70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1B70 19392 bytes
SHA-256: 8631a339fbb63f4ffe88dedf905f4458aec225c96a5febdf662fe5d9f0d151eb
font_01_sfnt_off00004408.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4408 18320 bytes
SHA-256: cf6d0fcc2a7c18e0ae1e84145e037068603b130caaef77e993c358e364abbe1e

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