Malicious PDF — malware analysis report

Static analysis result for SHA-256 fb03d70d0999437d…

MALICIOUS

PDF

34.2 KB Created: 2021-06-27 22:53:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: e74754b9de5850a78c5485d5642e3300 SHA-1: d141697a03c75d3ef04a0ff10d75ad0eab37d2e7 SHA-256: fb03d70d0999437db7cc85d7d6349006d20f47fe3f15884fc47878789af35351
180 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to websites promising free game currency and hacks, such as 'free-robux-quote-game-hack'. One of the links points to a raw IP address, and another to a known malicious redirector. These findings indicate a phishing or scam attempt designed to lead users to potentially malicious content or downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • 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.
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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.co/app/431946152/free-robux-quote-game-hack In PDF document text
    • http://1.179.208.67/ckfinder/userfiles/files/coin-master-hack-extension_GM406889139.pdfPDF link annotation
    • http://1.179.208.67/ckfinder/userfiles/files/how-to-win-robux_GM431946152.pdfIn PDF document text
    • http://1.179.208.67/ckfinder/userfiles/files/orewards-com-free-robux_GM431946152.pdfIn PDF document text
    • http://1.179.208.67/ckfinder/userfiles/files/get-free-robux-no-downloading-apps_GM431946152.pdfIn PDF document text
    • http://1.179.208.67/ckfinder/userfiles/files/how-to-get-free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://1.179.208.67/ckfinder/userfiles/files/hacks-para-coin-master_GM406889139.pdfIn PDF document text
    • http://1.179.208.67/ckfinder/userfiles/files/hey-google-how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://1.179.208.67/ckfinder/userfiles/files/hack-coin-master-online_GM406889139.pdfIn PDF document text
    • http://1.179.208.67/ckfinder/userfiles/files/daily-coin-master-free_GM406889139.pdfIn PDF document text
    • http://1.179.208.67/ckfinder/userfiles/files/roblox-how-to-hack-gears-online-rpg-using-cheats_GM431946152.pdfIn PDF document text
    • http://1.179.208.67/ckfinder/userfiles/files/minecraft-java-edition-free_GM479516143.pdfIn PDF document text
    • http://1.179.208.67/ckfinder/userfiles/files/how-to-get-minecraft-for-free-on-android-device_GM479516143.pdfIn PDF document text
    • http://1.179.208.67/ckfinder/userfiles/files/roblox-fun-robux_GM431946152.pdfIn PDF document text
    • http://1.179.208.67/ckfinder/userfiles/files/free-spins-and-coins-com_GM406889139.pdfIn PDF document text
    • http://1.179.208.67/ckfinder/userfiles/files/coin-master-free-spin-app-apk_GM406889139.pdfIn PDF document text
    • http://1.179.208.67/ckfinder/userfiles/files/millions-of-free-robux_GM431946152.pdfIn PDF document text
    • http://1.179.208.67/ckfinder/userfiles/files/how-to-hack-minecraft-pe_GM479516143.pdfIn PDF document text
    • http://1.179.208.67/ckfinder/userfiles/files/how-to-get-the-right-roblox-account-pin-hack_GM431946152.pdfIn PDF document text
    • http://1.179.208.67/ckfinder/userfiles/files/coin-master-daily-free-spins-link-facebook_GM406889139.pdfIn PDF document text
    • http://1.179.208.67/ckfinder/userfiles/files/roblox-hacked-accounts-list_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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002f2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F2C 22184 bytes
SHA-256: da6755d3b92230c99ff00b068d24a707be164d9766ea5df2f70cf886d951e87b
font_01_sfnt_off00006081.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6081 18980 bytes
SHA-256: dca4070c3ae4379e13a05b3c33279036044e4681afd6c3eec999d43974d2ba17

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