Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d67de1775a6c873…

MALICIOUS

PDF

45.0 KB Created: 2021-06-13 17:59:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 8ee59d5efa9de504997bd9265ab1e419 SHA-1: 0db76c1c829e2dab9216bfa74131163fc5710fe7 SHA-256: 9d67de1775a6c873f0b078a976313098d032cb37d5a88144045278dd15d887d7
220 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links designed to lure users to external sites, masquerading as generators for game hacks and cheats. Several heuristics indicate these links lead to malicious redirectors and a link farm, suggesting the primary goal is to drive traffic to potentially malicious content or phishing sites. No scripts were extracted, but the document structure and embedded URLs strongly indicate a social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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 http://netcdn.co/app/431946152/roblox-cheats-codes-2021-game-hack In PDF document text
    • http://hemmet-strand.dk/images/pokemon-go-free-gps-hack_GM1094591345.pdfIn PDF document text
    • http://hemmet-strand.dk/images/coin-master-free-coins-and-spins-app_GM406889139.pdfIn PDF document text
    • http://hemmet-strand.dk/images/com-roblox_GM431946152.pdfIn PDF document text
    • http://hemmet-strand.dk/images/free-roblox-phantom-forces-hack_GM431946152.pdfIn PDF document text
    • http://hemmet-strand.dk/images/how-to-get-minecraft-for-free-on-xbox-one_GM479516143.pdfIn PDF document text
    • http://hemmet-strand.dk/images/how-to-get-free-gift-card-codes-roblox_GM431946152.pdfIn PDF document text
    • http://hemmet-strand.dk/images/coin-master-cheats-free-spins_GM406889139.pdfIn PDF document text
    • http://hemmet-strand.dk/images/roblox-welcome-to-bloxburg-cheats_GM431946152.pdfIn PDF document text
    • http://hemmet-strand.dk/images/minecraft-hack-client-18-9_GM479516143.pdfIn PDF document text
    • http://hemmet-strand.dk/images/free-minecraft-servers-to-join_GM479516143.pdfIn PDF document text
    • http://hemmet-strand.dk/images/minecraft-free-download-mac-full-version-2021_GM479516143.pdfIn PDF document text
    • http://hemmet-strand.dk/images/free-minecraft-bedrock-server-hosting-24-7_GM479516143.pdfIn PDF document text
    • http://hemmet-strand.dk/images/get-free-easy-robux-today_GM431946152.pdfIn PDF document text
    • http://hemmet-strand.dk/images/roblox-speed-run-4-level-27-cheat_GM431946152.pdfIn PDF document text
    • http://hemmet-strand.dk/images/free-robux-that-actually-works_GM431946152.pdfIn PDF document text
    • http://hemmet-strand.dk/images/minecraft-ore-finder-mod_GM479516143.pdfIn PDF document text
    • http://hemmet-strand.dk/images/minecraft-java-free-account_GM479516143.pdfIn PDF document text
    • http://hemmet-strand.dk/images/how-to-get-free-robux-2021-not-patched-mac_GM431946152.pdfIn PDF document text
    • http://hemmet-strand.dk/images/robux-robux_GM431946152.pdfIn PDF document text
    • http://hemmet-strand.dk/images/descendants-2-on-roblox-that-is-free-from-intel_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000517b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x517B 25332 bytes
SHA-256: c4a34a1c0d22da60335074370cfbc02f80aa149d2e0fe79f2bf748aedfe0e7b4
font_01_sfnt_off00008b61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B61 18856 bytes
SHA-256: b6d2e669eff3822a8417ecc8214d3277f4f7b4e735f638e5f6273374aedcb4c8

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