Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca6ab636307577ea…

MALICIOUS

PDF

35.8 KB Created: 2021-06-25 18:08:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 37c4a82559a47cb4c757b97d851588fd SHA-1: 200b3ae7630efe59ca9c3d4acb21b1004ea27026 SHA-256: ca6ab636307577ead6233a7ad185a454fab35622cf2a994c6405a92babc1d994
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a prominent link disguised as a 'free generator / game hack' for Roblox, which is a common lure for malicious redirects. The heuristic firings confirm that the PDF links to known malicious redirector infrastructure. While no scripts were extracted, the document body and heuristics strongly indicate a phishing or scam attempt designed to redirect users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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.co/app/431946152/how-to-get-free-robux-on-roblox-2021-working-game-hack In PDF document text
    • http://shoruq.sch.ae/userfiles/files/free-minecraft-accounts-reddit_GM479516143.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/velvet-twitter-feel-free-roblox_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/coin-master-hack-september-2021_GM406889139.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/free-robux-only-username_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/free-robux-cards_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/how-do-u-hack-in-roblox_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/minecraft-fly-hack_GM479516143.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/coin-master-hack-xyz-apk-download_GM406889139.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/feb-23-2021-free-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/roblox-sprinting-simulator-hack-2021_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/coin-master-village-3_GM406889139.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/do-you-get-windows-10-minecraft-for-free-with-java_GM479516143.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/roblox-people-getting-passes-for-free_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/coin-master-hack-tool-ios_GM406889139.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/get-free-spins-coin-master-october-2021_GM406889139.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/rbxoffers-com-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/minecraft-free-ios-no-verification_GM479516143.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/comment-savoir-si-quelquun-hack-votre-compte-roblox_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/25-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/synapse-roblox-free-download_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_off0000321e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x321E 22520 bytes
SHA-256: 4b91320790426366c27a2185a4f4bf558b4b86a89540a7dc0d5e7de9ab0da35e
font_01_sfnt_off00006438.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6438 19948 bytes
SHA-256: b06485664e8ac3ce1125614b5d7884508f35fda8b16c3ee1942514fb25c3c4fc

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