Malicious PDF — malware analysis report

Static analysis result for SHA-256 5715c9657743fa55…

MALICIOUS

PDF

42.2 KB Created: 2021-05-11 18:01:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 67cc37d82d189e605158d06474c64890 SHA-1: 0968fa1e2759e66577d139c95e65f0e9a01f7149 SHA-256: 5715c9657743fa5583f3712000f14690606b231882738229a9faa080f8306e11
220 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains numerous links, including one to a known malicious redirector, masquerading as a 'free generator / game hack'. The document body and heuristics indicate a lure for game-related cheats, likely to lead users to malicious websites or download further payloads. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/coin-master-mod-version-free-download-game-hack In PDF document text
    • https://lib.bunghatta.ac.id/app/repository/coin-master-online-hack-link_GM406889139.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/coin-master-free-spins-today-daily-links_GM406889139.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/how-to-generate-free-coin-master-spin_GM406889139.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/free-minecraft-capes_GM479516143.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/gameoffice-net-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/how-to-download-minecraft-for-free-on-mac_GM479516143.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/coin-master-app-hacks_GM406889139.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/how-to-earn-robux-fast_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/roblox-robux-hack-generator_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/coin-master-hack-apk-33-download_GM406889139.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/cm-spin-link_GM406889139.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/coin-master-free-spin-whatsapp-group-link_GM406889139.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/coin-master-hack-100-working_GM406889139.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/robux-prices_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/robux-free-promo-codes_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/free-robux-generator-codes_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/archery-master-3d-unlimited-coins-hack_GM406889139.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/how-to-get-free-robux-instantly_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/is-roblox-free-on-nintendo-switch_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/coin-master-apk-mod-hack-download_GM406889139.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
stream_003_off000049f5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49F5 24688 bytes
SHA-256: e37370705d67574bb8151138af19b5dc72d52cd0227da169b359819ee8bd0f13
font_01_sfnt_off0000822d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x822D 18424 bytes
SHA-256: e6ff786f9dfb073c058a59ae6ce73d958a431569c9dda78b5bba1b34dc8d8c64

Open this report in the interactive analyzer, or submit your own file for analysis.