Malicious PDF — malware analysis report

Static analysis result for SHA-256 7039ac305fd2931e…

MALICIOUS

PDF

34.5 KB Created: 2021-06-25 16:48:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 85cb3d1c3db597027c555a7dc95134cb SHA-1: d1e15fb07051bebc412d1626f212ddd864a66bce SHA-256: 7039ac305fd2931edc0654b74b8f0b1be666b288e5603df0b421be2000e881c4
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors and lures users with promises of 'free generators' or 'game hacks' for Roblox. The document body explicitly mentions 'Roblox Recover Hacked Account' and includes the primary malicious URL. While no scripts were extracted, the embedded URLs and the nature of the lure strongly suggest a phishing or scam attempt designed to steal credentials or lead users to malicious content.

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/roblox-recover-hacked-account-game-hack In PDF document text
    • http://library.sdkmaterdei.sch.id/repository/how-to-setup-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/roblox-hack-me-robux_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/free-robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/roblox-wall-hack-cheat-engine_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/code-robux-free_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/roblox-hack-injector_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/piano-hack-roblox_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/roblox-mods-to-hack-robux_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/military-outfit-roblox-free-download_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/roblox-prison-life-hack-download-2021-mobile_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/get-free-roblox-by-playi_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/free-robux-no-scam-or-survey-or-hack_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/how-to-get-free-robux-with-promo-codes_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/how-to-get-robux-for-free-2021-october_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/razzberry-cheat-roblox_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/mod-hack-roblox_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/gem-hack-kat-roblox_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/free-minecraft-alt-accounts_GM479516143.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/how-to-get-free-300-robux_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/robux-hack-xbox-one_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_off00003081.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3081 22052 bytes
SHA-256: 77353ebc83d2f2af5fbac09100d897f0e480635b6d783d27e2113e4de58e8880
font_01_sfnt_off00006142.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6142 19188 bytes
SHA-256: ea474372ad09de3cf1ae033532ad2236d11dea14f14269164d7f5441a2d9ced2

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