Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e5170cc54d3c18d…

MALICIOUS

PDF

32.6 KB Created: 2021-07-08 15:51:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 8178d452f9e45e592c37e1153e189348 SHA-1: a03f0620273ec38b2f61da10a033cc8d764e089d SHA-256: 7e5170cc54d3c18d33fa221daf5074b083639bb316b9432cc01af051b5b3dfc3
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to redirector domains, specifically advertising 'free Robux' or 'game hacks'. The primary redirector URL http://netcdn.tw/app/431946152/free-robux-com-roblox-game-hack is flagged as malicious. The document body also contains similar lures and URLs, indicating a phishing or malware distribution attempt. No scripts were extracted, but the embedded links are the primary vector for malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

Heuristics 4

  • 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.
  • 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.tw/app/431946152/free-robux-com-roblox-game-hack In PDF document text
    • http://artistaone.co/userfiles/files/any-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/is-minecraft-java-edition-free_GM479516143.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/roblox-free-ssscripts_GM431946152.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/lastrick-com-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/today-free-spin-coin-master_GM406889139.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/ip-grabber-hack-for-roblox_GM431946152.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/coin-master-ad_GM406889139.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/como-conseguir-robux-gratis-sin-hacks-2021_GM431946152.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/cheat-codes-in-endless-treasure-quest-on-roblox_GM431946152.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/free-lvl-7-roblox_GM431946152.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/roblox-free-mvp_GM431946152.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/coin-master-hack-without-verification-code_GM406889139.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/how-to-get-free-robux-no-hack-or-download-2021_GM431946152.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/fbchampion-com_GM406889139.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/coin-master-links-to-free-spins_GM406889139.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/mcpe-master-unlimited-coins-hack-apk_GM406889139.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/coin-master-free-attack_GM406889139.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/hacker-coin-master_GM406889139.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/100-free-spins-for-coin-master_GM406889139.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_off000029fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x29FD 22368 bytes
SHA-256: c1670869dbca77610e3a8c53339b340b616278584734fb79e8a1669f0af9634a
font_01_sfnt_off00005ac6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5AC6 19052 bytes
SHA-256: f1c402a5b139f7054ce39ccfb5800536152a5b826a5c5a7ec81e6f9b67a9d2f8

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