Malicious PDF — malware analysis report

Static analysis result for SHA-256 e34464f467da365c…

MALICIOUS

PDF

34.6 KB Created: 2021-07-08 08:27:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 11ef4580755d6e18f9e131004ea0aabf SHA-1: df00814a8215e19a172af36a7c138dfc0796f558 SHA-256: e34464f467da365c641f9c8c3f28945a350413368b6f5edec1a46d731b6b3708
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/431946152/free-robux-working-game-hack PDF link annotation
    • http://perpustakaan.rajawali.ac.id/senayan8/repository/moonactive-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://perpustakaan.rajawali.ac.id/senayan8/repository/free-robux-card-generator-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.rajawali.ac.id/senayan8/repository/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.rajawali.ac.id/senayan8/repository/free-spin-link-for-coin-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan.rajawali.ac.id/senayan8/repository/coin-master-hack-tool-v1-9-download-free-pc_GM406889139.pdfIn PDF document text
    • http://perpustakaan.rajawali.ac.id/senayan8/repository/how-to-get-free-premium-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.rajawali.ac.id/senayan8/repository/roblox-booga-booga-hack_GM431946152.pdfIn PDF document text
    • http://perpustakaan.rajawali.ac.id/senayan8/repository/roblox-free-robux-com_GM431946152.pdfIn PDF document text
    • http://perpustakaan.rajawali.ac.id/senayan8/repository/coin-master-free-spins-daily-fb-champion_GM406889139.pdfIn PDF document text
    • http://perpustakaan.rajawali.ac.id/senayan8/repository/minecraft-hacker-mask_GM479516143.pdfIn PDF document text
    • http://perpustakaan.rajawali.ac.id/senayan8/repository/how-to-get-free-robux-without-doing-anything-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.rajawali.ac.id/senayan8/repository/coin-master-hack-mod-apk-download_GM406889139.pdfIn PDF document text
    • http://perpustakaan.rajawali.ac.id/senayan8/repository/app-for-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan.rajawali.ac.id/senayan8/repository/robux-offers_GM431946152.pdfIn PDF document text
    • http://perpustakaan.rajawali.ac.id/senayan8/repository/how-much-pubg-uc_GM1330123889.pdfIn PDF document text
    • http://perpustakaan.rajawali.ac.id/senayan8/repository/coin-master-card-collection-hack_GM406889139.pdfIn PDF document text
    • http://perpustakaan.rajawali.ac.id/senayan8/repository/free-robux-hack-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://perpustakaan.rajawali.ac.id/senayan8/repository/how-to-get-free-robux-on-chromebook_GM431946152.pdfIn PDF document text
    • http://perpustakaan.rajawali.ac.id/senayan8/repository/earn-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan.rajawali.ac.id/senayan8/repository/how-to-hack-roblox-to-get-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
stream_002_off00002f85.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2F85 22472 bytes
SHA-256: 242071ecf776b8991480689ad903f68d8dc5a5bef808c5d163c6f1e680177ece
font_01_sfnt_off000061b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61B9 19204 bytes
SHA-256: ce738487085ad599441484df9d90a1a143049edc5affa9a85a5d558c4f13480e

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