Malicious PDF — malware analysis report

Static analysis result for SHA-256 d4677d2f2edc274d…

MALICIOUS

PDF

35.4 KB Created: 2021-06-18 18:15:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 18db8179f1ccd8a467a12cc73b8c1cf9 SHA-1: 1b5b48033807b156bf0deae00e75ed18186620b5 SHA-256: d4677d2f2edc274d7d2afb545ab44e2090e8d0dcc1f46bee59d1124b39b4376b
142 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm, routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • 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.
  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/best-roblox-hacking-client-game-hack PDF link annotation
    • http://maslabaou.com/images/coin-master-2021-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
    • http://maslabaou.com/images/hack-roblox-with-python_GM431946152.pdfIn PDF document text
    • http://maslabaou.com/images/coin-master-cheats-2021_GM406889139.pdfIn PDF document text
    • http://maslabaou.com/images/today-coin-master-free-coins-link_GM406889139.pdfIn PDF document text
    • http://maslabaou.com/images/minecraft-app-store-free_GM479516143.pdfIn PDF document text
    • http://maslabaou.com/images/how-to-get-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://maslabaou.com/images/how-do-you-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • http://maslabaou.com/images/minecraft-xbox-360-free-download-code_GM479516143.pdfIn PDF document text
    • http://maslabaou.com/images/how-to-get-free-robux-without-doing-anything-2021_GM431946152.pdfIn PDF document text
    • http://maslabaou.com/images/how-to-get-free-tiktok-coins_GM835599320.pdfIn PDF document text
    • http://maslabaou.com/images/where-can-i-get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://maslabaou.com/images/how-to-get-free-roebucks_GM431946152.pdfIn PDF document text
    • http://maslabaou.com/images/free-robux-codes-2021-not-used_GM431946152.pdfIn PDF document text
    • http://maslabaou.com/images/how-can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://maslabaou.com/images/100-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://maslabaou.com/images/i-need-robux_GM431946152.pdfIn PDF document text
    • http://maslabaou.com/images/what-games-on-roblox-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://maslabaou.com/images/free-robux-without-downloading-any-apps_GM431946152.pdfIn PDF document text
    • http://maslabaou.com/images/woman-roblox_GM431946152.pdfIn PDF document text
    • http://maslabaou.com/images/how-to-get-free-robux-on-roblox_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
font_00_sfnt_off0000340f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x340F 22596 bytes
SHA-256: 7a1e86912ce57b464a0b2c93eedff786e7b919bdaf644b8a82899ee2d022256a
font_01_sfnt_off0000668b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x668B 18692 bytes
SHA-256: 74de31077a997a6f6d27d375aa420121c18327dd67e83800abc9589e10e16010

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