Malicious PDF — malware analysis report

Static analysis result for SHA-256 13850d8b29403299…

MALICIOUS

PDF

42.2 KB Created: 2021-05-16 22:35:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 3a2df9946a0a53c8235776a75b2d1631 SHA-1: ba0f165fdf52209edf21c955c56f175c776ebb75 SHA-256: 13850d8b294032998485776647dc94f94208a59a1735c912b3b6a5e1cc6cdb9f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, disguised as offers for game hacks and free currency. The heuristic firings indicate that these links are designed to lure users into potentially harmful websites. While no scripts were explicitly extracted, the nature of the lures and the embedded URLs strongly suggest an attempt to redirect users to malicious content, likely for further exploitation or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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 https://netcdn.xyz/app/431946152/getrobux-come-game-hack In PDF document text
    • https://www.manmed.info:443/images/_GM479516143.pdfIn PDF document text
    • https://www.manmed.info:443/images/free-robux-app-real_GM431946152.pdfIn PDF document text
    • https://www.manmed.info:443/images/free-coin-link-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.manmed.info:443/images/free-script-executor-roblox_GM431946152.pdfIn PDF document text
    • https://www.manmed.info:443/images/how-to-download-minecraft-for-free-on-android_GM479516143.pdfIn PDF document text
    • https://www.manmed.info:443/images/coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
    • https://www.manmed.info:443/images/coin-master-free-spins-link-today-twitter_GM406889139.pdfIn PDF document text
    • https://www.manmed.info:443/images/roblox36com-free-robux_GM431946152.pdfIn PDF document text
    • https://www.manmed.info:443/images/free-robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • https://www.manmed.info:443/images/free-daily-coin-master-coins_GM406889139.pdfIn PDF document text
    • https://www.manmed.info:443/images/free-spins-coin-master-android_GM406889139.pdfIn PDF document text
    • https://www.manmed.info:443/images/free-robux-with-no-human-verification_GM431946152.pdfIn PDF document text
    • https://www.manmed.info:443/images/how-to-get-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://www.manmed.info:443/images/minecraft-bedrock-hacks-windows-10_GM479516143.pdfIn PDF document text
    • https://www.manmed.info:443/images/coin-master-hack_GM406889139.pdfIn PDF document text
    • https://www.manmed.info:443/images/spin-link-coin-master_GM406889139.pdfIn PDF document text
    • https://www.manmed.info:443/images/free-robux-no-scam_GM431946152.pdfIn PDF document text
    • https://www.manmed.info:443/images/free-robux-reddit_GM431946152.pdfIn PDF document text
    • https://www.manmed.info:443/images/coin-master-cheats-and-hacks_GM406889139.pdfIn PDF document text
    • https://www.manmed.info:443/images/minecraft-handbook_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
stream_003_off0000492c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x492C 25072 bytes
SHA-256: 53d3f537865452df22d8cf6367cfe557f83b97a008fc6615c23a96f5a72b1ec1
font_01_sfnt_off000082e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82E7 18216 bytes
SHA-256: eccbe16884f1372dd0d8c57c88e5bc61ee7bcfafa4ac6286ca85878eadaf1272

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