Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c9d48335c0b1614…

MALICIOUS

PDF

35.6 KB Created: 2021-06-28 11:28:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 53adb1ca0059e0f0bb2c5b0208e95746 SHA-1: d1fca97f579fbffcc3540f3175831d208883bf17 SHA-256: 5c9d48335c0b1614132e68a2c073de78a760c9de4c76b973488c2584b4964639
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/roblox-free-drift-track-model-game-hack PDF link annotation
    • https://www.wholesomeliving.in/uploaded_files/userfiles/files/stop-roblox-from-shutting-down-cheat-engine_GM431946152.pdfIn PDF document text
    • http://www.wholesomeliving.in/uploaded_files/userfiles/files/how-do-you-hack-pn-roblox_GM431946152.pdfIn PDF document text
    • http://www.wholesomeliving.in/uploaded_files/userfiles/files/ban-hack-roblox-trackid-sp006_GM431946152.pdfIn PDF document text
    • https://www.wholesomeliving.in/uploaded_files/userfiles/files/how-to-get-free-robux-website_GM431946152.pdfIn PDF document text
    • https://www.wholesomeliving.in/uploaded_files/userfiles/files/coin-master-free-gold-cards-link-2021_GM406889139.pdfIn PDF document text
    • http://www.wholesomeliving.in/uploaded_files/userfiles/files/how-many-tiktok-free-followers_GM835599320.pdfIn PDF document text
    • https://www.wholesomeliving.in/uploaded_files/userfiles/files/roblox-skin-free-girl_GM431946152.pdfIn PDF document text
    • https://www.wholesomeliving.in/uploaded_files/userfiles/files/adf-ly-hack-roblox_GM431946152.pdfIn PDF document text
    • http://www.wholesomeliving.in/uploaded_files/userfiles/files/free-robux-pins_GM431946152.pdfIn PDF document text
    • http://www.wholesomeliving.in/uploaded_files/userfiles/files/minecraft-hacks-list_GM479516143.pdfIn PDF document text
    • https://www.wholesomeliving.in/uploaded_files/userfiles/files/how-to-get-a-mythic-for-free-in-assasin-roblox_GM431946152.pdfIn PDF document text
    • https://www.wholesomeliving.in/uploaded_files/userfiles/files/rbx-free-robux_GM431946152.pdfIn PDF document text
    • https://www.wholesomeliving.in/uploaded_files/userfiles/files/how-to-get-free-robux-2021-easy_GM431946152.pdfIn PDF document text
    • https://www.wholesomeliving.in/uploaded_files/userfiles/files/codes-for-roblox-hack_GM431946152.pdfIn PDF document text
    • http://www.wholesomeliving.in/uploaded_files/userfiles/files/coin-master-cheats-without-verification_GM406889139.pdfIn PDF document text
    • https://www.wholesomeliving.in/uploaded_files/userfiles/files/roblox-mining-simulator-hack-script_GM431946152.pdfIn PDF document text
    • http://www.wholesomeliving.in/uploaded_files/userfiles/files/free-robux-reddit_GM431946152.pdfIn PDF document text
    • https://www.wholesomeliving.in/uploaded_files/userfiles/files/coin-master-email-rewards-link_GM406889139.pdfIn PDF document text
    • http://www.wholesomeliving.in/uploaded_files/userfiles/files/daily-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • https://www.wholesomeliving.in/uploaded_files/userfiles/files/bouton-free-robux_GM431946152.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_off00003213.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3213 22600 bytes
SHA-256: bfaa53ecde113e6a5554c61ba8e496c49e4e54b94ed4f6b88f479d103e432529
font_01_sfnt_off000064bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64BF 19584 bytes
SHA-256: 872b42f62fdd99dff5df468b04669dc4e9ab406ec1a078fa00c360ff9219f8b4

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