Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd0f119b7272a3a7…

MALICIOUS

PDF

34.7 KB Created: 2021-06-21 22:38:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: f339ce0bad8b932d9e261cc5cf4e6def SHA-1: 1bb5c0de0e26ed6d2b3d2c4e220b37e2c68a8033 SHA-256: bd0f119b7272a3a755f5617d236f983ab3eda1e986a211e8c742facee1ef347a
142 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains a large number of embedded URLs, many of which are designed as link farms for game hacks and free currency generators. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' and the document body's explicit mention of 'Indigojoe Free Robux' and 'CLICK HERE TO ACCESS ROB' strongly suggest a phishing or scam attempt. The presence of numerous external links indicates an effort to redirect users to potentially malicious sites, likely for credential harvesting or malware distribution.

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/indigojoe-free-robux-game-hack PDF link annotation
    • http://ofthalmiatrosthess.gr/images/how-to-get-free-faces-on-roblox_GM431946152.pdfIn PDF document text
    • http://ofthalmiatrosthess.gr/images/free-robux-gruops_GM431946152.pdfIn PDF document text
    • http://ofthalmiatrosthess.gr/images/free-robux-generator-roblox-no-survey-pc-no-human-verification_GM431946152.pdfIn PDF document text
    • http://ofthalmiatrosthess.gr/images/how-to-get-free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://ofthalmiatrosthess.gr/images/roblox-password-hacker_GM431946152.pdfIn PDF document text
    • http://ofthalmiatrosthess.gr/images/http-coin-master-hack-club_GM406889139.pdfIn PDF document text
    • http://ofthalmiatrosthess.gr/images/how-to-get-free-spins-grom-coin-master_GM406889139.pdfIn PDF document text
    • http://ofthalmiatrosthess.gr/images/pokemon-go-free-promo-code_GM1094591345.pdfIn PDF document text
    • http://ofthalmiatrosthess.gr/images/how-to-inf-jump-in-roblox-no-hack_GM431946152.pdfIn PDF document text
    • http://ofthalmiatrosthess.gr/images/minecraft-bedrock-client_GM479516143.pdfIn PDF document text
    • http://ofthalmiatrosthess.gr/images/coin-master-hack-https-coinms-net_GM406889139.pdfIn PDF document text
    • http://ofthalmiatrosthess.gr/images/coin-master-free-in-app-purchases_GM406889139.pdfIn PDF document text
    • http://ofthalmiatrosthess.gr/images/how-to-actually-get-free-robux_GM431946152.pdfIn PDF document text
    • http://ofthalmiatrosthess.gr/images/free-roblox-accounts-dantdm_GM431946152.pdfIn PDF document text
    • http://ofthalmiatrosthess.gr/images/minecraft-free-download-2021_GM479516143.pdfIn PDF document text
    • http://ofthalmiatrosthess.gr/images/earn-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://ofthalmiatrosthess.gr/images/how-to-get-free-roebucks-in-roblox-2021_GM431946152.pdfIn PDF document text
    • http://ofthalmiatrosthess.gr/images/roblox-hack_GM431946152.pdfIn PDF document text
    • http://ofthalmiatrosthess.gr/images/free-robux-not-fake_GM431946152.pdfIn PDF document text
    • http://ofthalmiatrosthess.gr/images/free-robux-generator-com-roblox-hack_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_off00003065.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3065 22416 bytes
SHA-256: fbc5d9681bac56de3f8f69c0e5508ada49c37b8357f7c43eba287b9ed530e7fa
font_01_sfnt_off0000624d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x624D 19196 bytes
SHA-256: 8f1b808614919c6cd790ff99b9003501237d7262e1da6af815b35cf63dbb64d9

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