Malicious PDF — malware analysis report

Static analysis result for SHA-256 7232d6832880a397…

MALICIOUS

PDF

41.0 KB Created: 2021-05-11 04:37:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 29e2e027095eb4e637b5d06741d94fd1 SHA-1: d632507f96936a90dfe41bc34539939a7fefbea0 SHA-256: 7232d6832880a397853839ea75c69aaf99a2ed916dfa73abbb58f687eac4be6f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, masquerading as game hacks and free spins. The document body and embedded URLs strongly suggest a lure for users to click through to potentially malicious sites. While no scripts were explicitly extracted, the nature of the links and the 'download button' heuristic indicate a likely attempt to redirect users to download further malware or engage in phishing.

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/406889139/free-spins-game-hack In PDF document text
    • http://scuttworksdesigns.us/images/coin-master-hack-blogspot_GM406889139.pdfIn PDF document text
    • http://scuttworksdesigns.us/images/free-spins-coin-master-ios-2021_GM406889139.pdfIn PDF document text
    • http://scuttworksdesigns.us/images/robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://scuttworksdesigns.us/images/coin-master-pro-hack_GM406889139.pdfIn PDF document text
    • http://scuttworksdesigns.us/images/get-free-gold-cards-in-coin-master_GM406889139.pdfIn PDF document text
    • http://scuttworksdesigns.us/images/coin-master-free-soins_GM406889139.pdfIn PDF document text
    • http://scuttworksdesigns.us/images/scary-larry-roblox_GM431946152.pdfIn PDF document text
    • http://scuttworksdesigns.us/images/rewards-robux_GM431946152.pdfIn PDF document text
    • http://scuttworksdesigns.us/images/free-free-robux_GM431946152.pdfIn PDF document text
    • http://scuttworksdesigns.us/images/cool-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://scuttworksdesigns.us/images/update-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://scuttworksdesigns.us/images/is-coin-master-hacks-safe_GM406889139.pdfIn PDF document text
    • http://scuttworksdesigns.us/images/how-to-hack-roblox_GM431946152.pdfIn PDF document text
    • http://scuttworksdesigns.us/images/free-roblox-hack_GM431946152.pdfIn PDF document text
    • http://scuttworksdesigns.us/images/haktuts-coin-master-free-spin-link-today_GM406889139.pdfIn PDF document text
    • http://scuttworksdesigns.us/images/coin-master-daily-gift-free-spins-and-coins-link_GM406889139.pdfIn PDF document text
    • http://scuttworksdesigns.us/images/moonactive-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://scuttworksdesigns.us/images/free-downloads-for-coin-master-daily-rewards_GM406889139.pdfIn PDF document text
    • http://scuttworksdesigns.us/images/free-coin-master-hack-no-verification_GM406889139.pdfIn PDF document text
    • http://scuttworksdesigns.us/images/how-to-get-free-robux-without-downloading-any-apps_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_off00004845.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4845 24516 bytes
SHA-256: 21097dad27b6deb962c71dcdd430eee1628d0f0c4076ca9b9fdcfa4c446cec96
font_01_sfnt_off000080cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80CF 17412 bytes
SHA-256: 6c1c32b97f4bf65551242dd1dc58e8e825ad8a01d5ccf0df5c631e6ff61c0786

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