Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0d4bad8ba0d3db2…

MALICIOUS

PDF

42.3 KB Created: 2021-05-17 02:03:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: e55e790552ee7b3d3fadbae744b05909 SHA-1: 2cc1f3f8a6beeab23ea3b55edf3121ae8dcfda08 SHA-256: d0d4bad8ba0d3db2493150f4886fc2ebe7ac7627ac6035be65c93e4597a4f67f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a link to a malicious redirector disguised as a game hack generator. The ML classifier strongly indicated maliciousness, and multiple heuristics confirm the presence of malicious links and a lure for a 'free generator'. The document body, though partially corrupted, contains references to game hacks and URLs that reinforce this phishing attempt.

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/479516143/minecraft-cheat-client-game-hack In PDF document text
    • https://www.jascon.de/images/how-to-get-free-robux-without-email_GM431946152.pdfIn PDF document text
    • https://www.jascon.de/images/free-robux-hacker-us_GM431946152.pdfIn PDF document text
    • https://www.jascon.de/images/how-to-get-free-robux-codes_GM431946152.pdfIn PDF document text
    • https://www.jascon.de/images/get-robux-now_GM431946152.pdfIn PDF document text
    • https://www.jascon.de/images/coin-master-free-spins-app-for-iphone_GM406889139.pdfIn PDF document text
    • https://www.jascon.de/images/coin-master-attack-block-hack_GM406889139.pdfIn PDF document text
    • https://www.jascon.de/images/roblox-hacking-website_GM431946152.pdfIn PDF document text
    • https://www.jascon.de/images/coin-master-hack-twitter_GM406889139.pdfIn PDF document text
    • https://www.jascon.de/images/coin-master-free-spin-and-coin-link-haktuts-hacking-news_GM406889139.pdfIn PDF document text
    • https://www.jascon.de/images/minecraft-hax-download-no-virus_GM479516143.pdfIn PDF document text
    • https://www.jascon.de/images/free-robux-live_GM431946152.pdfIn PDF document text
    • https://www.jascon.de/images/coin-master-free-gold-cards_GM406889139.pdfIn PDF document text
    • https://www.jascon.de/images/coin-master-hack-app-for-ios_GM406889139.pdfIn PDF document text
    • https://www.jascon.de/images/free-robux-cards_GM431946152.pdfIn PDF document text
    • https://www.jascon.de/images/free-spins-and-coins-from-coin-master-game_GM406889139.pdfIn PDF document text
    • https://www.jascon.de/images/coin-master-free-spins-link-2021-april_GM406889139.pdfIn PDF document text
    • https://www.jascon.de/images/free-roblox-avatar_GM431946152.pdfIn PDF document text
    • https://www.jascon.de/images/how-to-hack-someones-roblox-account_GM431946152.pdfIn PDF document text
    • https://www.jascon.de/images/how-to-hack-coin-master-apkmody_GM406889139.pdfIn PDF document text
    • https://www.jascon.de/images/free-robux-quiz_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_off00004b43.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B43 25220 bytes
SHA-256: 0eb7e4ded643fd7fcdbca111a76215820804944a0e1d7f569b79193a52aa0486
font_01_sfnt_off000084d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84D0 17808 bytes
SHA-256: ae4d3a4e8db3c535571974f20d29f774c055cc29dc4a6064f071376039008cf0

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