Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc570185a4a4b759…

MALICIOUS

PDF

33.9 KB Created: 2021-06-19 05:13:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: c88003ce5c9123f98dd79545c5e3fd47 SHA-1: 9fe737ff4735a2eeb0b45e30d6b627b77de500fe SHA-256: cc570185a4a4b759f9e27d35b6e775034ff1842ae23946deea981fe43ca65a72
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure of free Robux and game hacks to trick users into clicking malicious links. The primary link, http://netcdn.co/app/431946152/how-to-get-free-robux-nicster-game-hack, is identified as a malicious redirector. While no scripts were extracted, the PDF structure and embedded URLs strongly indicate a phishing or scam attempt, likely leading to further malware download or credential harvesting.

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-nicster-game-hack In PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/bad-minecraft-free_GM479516143.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/bux-free-robux_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/how-can-u-get-free-robux_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/sites-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/how-to-get-free-robux-in-roblox-on-the-pc_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/roblox-g_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/earn-free-robux_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/coin-master-free-spins-link-2021-hack_GM406889139.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/coin-master-free-spins-and-coins-daily_GM406889139.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/do-hacks-work-with-the-roblox-windows-edition-app_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/free-spins-coin-master-daily_GM406889139.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/free-robux-gen_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/login-robux_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/roblox-black-panther-mask-free_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/coin-master-free-cards-2021_GM406889139.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/real-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/boost9-com-roblox-hack_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/free-robux-hack-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/free-roblox-executor_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/is-minecraft-java-edition-free_GM479516143.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_off00002e96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E96 22016 bytes
SHA-256: 371adc1259db25529cd9077bbc46d8d663dc0d146a4752be33514f6b6332934d
font_01_sfnt_off00005f4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F4F 19104 bytes
SHA-256: 02a8af3194a938f58952376a4011c9621b3aec38a86072dda7e05d62a2377db3

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