Malicious PDF — malware analysis report

Static analysis result for SHA-256 e47e70721e14130e…

MALICIOUS

PDF

34.4 KB Created: 2021-07-03 12:42:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 841dc542118930a05d04261479598472 SHA-1: d1629b848dfe1028d39dec5188403083d6b1279d SHA-256: e47e70721e14130ebd6aaf9351a92c72f4b3153701bc93264eb17779176d1ec5
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.tw/app/406889139/coin-mster-free-game-hack PDF link annotation
    • http://lib.akpnbahtera.ac.id/repository/free-robux-discord_GM431946152.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/hack-version-of-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/coin-master-hack-mod-apk-download_GM406889139.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/do-coin-master-hacks-work_GM406889139.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/how-to-get-free-robux-promo-codes-2021_GM431946152.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/coin-master-coins-free_GM406889139.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/free-robux-without-verification_GM431946152.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/pokemon-go-free-and-inter-egg-sting-development_GM1094591345.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/minecraft-java-free-account_GM479516143.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/how-to-get-free-spins-on-coin-master-without-waiting_GM406889139.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/coin-master-free-spins-link-ios_GM406889139.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/roblox-hack-site_GM431946152.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/coin-master-tricks_GM406889139.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/coin-master-online-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/free-robux-no-verification-at-all_GM431946152.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/coin-master-apk-hack-mod-download_GM406889139.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/free-coin-master-spins-blog_GM406889139.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/free-robux-no-human-verification-no-survey_GM431946152.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/roblox-lumber-tycoon-2-money-hack-cheat-engine_GM431946152.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/coin-master-free-spin-27_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
font_00_sfnt_off000030be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30BE 23104 bytes
SHA-256: 8e6d6b9ef69019fa2e37bd29fc1fdc81ebdff8116249fca0af6cbe6b4dc6d643
font_01_sfnt_off00006495.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6495 17996 bytes
SHA-256: f7d90c742ed77143965e1bd6f19d83d4aa1a1c074d0feb44f390a9defa22430a

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