Malicious PDF — malware analysis report

Static analysis result for SHA-256 6da5cd3709fc5c79…

MALICIOUS

PDF

33.7 KB Created: 2021-07-05 03:25:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 2cfd4a2bea17d69476cd275055cecd55 SHA-1: 7ac27229e25c096900c0e96e566d72f1e4c67bd5 SHA-256: 6da5cd3709fc5c798c22e2f326be2903e2bddedbd3bd1ea21c29efa9a0083d27
142 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links disguised as game hacks and generators, a common lure for phishing or malware distribution. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of such links, suggesting a malicious intent to drive traffic to potentially harmful sites. The ML classifier also strongly flagged this PDF as malicious.

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/ww-roblox-come-game-hack PDF link annotation
    • http://library.apsidoarjo.ac.id/repository/how-to-hack-pokes-roblox-account_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/how-to-download-hacks-for-roblox_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/nuevo-hack-para-roblox-tools_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/roblox-card-pin-hack_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/roblox-avatar-free-skin_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/how-to-earn-robux-fast_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/roblox-song-id-billie-elish-free_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-auto-key-presser-for-roblox_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-robux-generator-no-surveys-2021_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/rbxfree-com-free-robux_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/coin-master-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/how-to-watch-ads-for-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/roblox-royale-high-diamond-hack_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-robux-give-away-everyone-will-get-robux-proof_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-long-good-roblox-names_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/how-to-hack-your-friends-account-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-robux-virus_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-robux-app-real_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_off00002cc0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2CC0 22264 bytes
SHA-256: cb3467bf45af481f76e9c492ab2ebe72df8744f26b05be26c3ec11ab7268d428
font_01_sfnt_off00005e2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E2B 19108 bytes
SHA-256: 90580883745e156586b97c3ed689431169c004bf7d7dde53d905db1a3f24cb6d

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