Malicious PDF — malware analysis report

Static analysis result for SHA-256 42e319c995d70b46…

MALICIOUS

PDF

34.9 KB Created: 2021-06-26 07:49:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 5a47784950cbeb5be21c18a057774a0e SHA-1: 38120000d7ce63a927e307cf80c2a44038400443 SHA-256: 42e319c995d70b46a0a147f4f4ba12d0dc8cffc0730557471847a222b92a9498
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document employs a 'free game hack' lure to entice users to click on numerous embedded links. The links, including one pointing to an IP address, lead to pages promising game currency or hacks, which is a common tactic for phishing or malware distribution. The ML classifier strongly supports the malicious nature of this PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 6

  • 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.
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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/how-to-get-robux-for-free-on-a-phone-game-hack PDF link annotation
    • http://103.40.122.33/akasia/repository/how-to-get-free-gamepass-on-roblox_GM431946152.pdfPDF link annotation
    • http://103.40.122.33/akasia/repository/how-to-hack-roblox-with-lucky-patcher-2021_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/free-obc-for-roblox-august-2021_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/roblox-free-roblox-no-survey_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/pubg-uc-hack-apk_GM1330123889.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/free-robux-hacker-us_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/bloxbird-roblox-franais-free_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/how-to-join-roblox-youtubers-games-hack_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/how-to-use-snowlords-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/roblox-profile-picture-free-to-use_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/how-to-get-hacks-on-minecraft_GM479516143.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/easy-robux-hack-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/free-coin-master-cards_GM406889139.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/free-robux-that-actually-works_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/roblox-hacks-com_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/free-robux-generator-no-survey-no-download-2021_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/break-free-roblox-music-id_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/robux-hack-app-download_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/free-tiktok-likes-no-human-verification-or-download_GM835599320.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/roblox-studio-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_off000030dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30DD 22460 bytes
SHA-256: 08400a7a8a56a12f173d7c137db84cc07639442623d38ec15430271fde88f078
font_01_sfnt_off00006297.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6297 19304 bytes
SHA-256: d1a225d0e34a83e1cb5d07c816942483298f60e7116e6ec229709f8a424aae34

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