Malicious PDF — malware analysis report

Static analysis result for SHA-256 7801f37d0ef4180a…

MALICIOUS

PDF

33.7 KB Created: 2021-07-01 20:54:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 15767385ba4b85c65ee2077a493a8f4b SHA-1: 662197e7deb639556cff25697a63f3f2f318df7e SHA-256: 7801f37d0ef4180a8a6fa90d497ce61c09622a25076a716956dae4e53230ca21
180 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links designed to lure users into clicking on game hack generators and free Robux scams. The links point to a known malicious redirector infrastructure and IP-based URLs hosting further deceptive content. The ML classifier strongly indicated maliciousness, supporting the conclusion that this document is part of a phishing or scam campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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/roblox-project-pokemon-exp-hack-game-hack In PDF document text
    • http://103.40.122.33/akasia/repository/free-robux-message_GM431946152.pdfPDF link annotation
    • http://103.40.122.33/akasia/repository/robux-co-hack_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/does-roblox-premium-expire_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/how-to-get-free-robux-oprewards_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/how-to-get-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/coin-master-mod-apk-latest-hack-with-unlimited-free-spins_GM406889139.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/free-robux-in-5-seconds_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/free-robux-no-human-verification-no-survey_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/get-free-robux-now_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/coin-master-hack_GM406889139.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/comment-hack-un-compte-roblox-2021_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/how-to-use-scripts-in-roblox-hack_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/how-to-use-cheat-engine-roblox-2021_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/coin-master-spin-free_GM406889139.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/free-robux-promo-codes-february-2021-not-expired_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/how-to-hack-people-on-roblox_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/roblox-hack-client-free_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/free-robux-no-verification-no-survey_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/how-do-u-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/roblox-free-roblox-no-survey_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_off00002d54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D54 21752 bytes
SHA-256: a8c6274e7b81d1bf1c9f844f6e586fa4d4df39e1c49dcd76f52d5e19b3ed509d
font_01_sfnt_off00005d24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D24 19536 bytes
SHA-256: c718a5ab943ced0fd75b803745c143ffdfa854019a137bf9669611ccdcbf59e9

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