Malicious PDF — malware analysis report

Static analysis result for SHA-256 04fba5d89d7dac53…

MALICIOUS

PDF

32.3 KB Created: 2021-07-25 13:43:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: aec8535d0dd0fb5559363b0dc907bbc5 SHA-1: 3f4f22f7ae6f62034a643722705fd3275759e7ff SHA-256: 04fba5d89d7dac53df060b7c8e1defabcf972d3bcd2d2264d9fd3fb8c32bb559
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors and websites offering 'free Robux' or 'game hacks', indicating a phishing or scam attempt. The embedded URLs are designed to lure users into clicking them, likely leading to further malicious content or malware downloads. No scripts were extracted, but the document structure and embedded URLs strongly suggest a phishing or social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9900

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/rblx-gg-free-robux-game-hack In PDF document text
    • http://islamkennis.com/images/free-robux-obby_GM431946152.pdfIn PDF document text
    • http://islamkennis.com/images/free-tiktok-followers-instantly_GM835599320.pdfIn PDF document text
    • http://islamkennis.com/images/get-free-robux-com_GM431946152.pdfIn PDF document text
    • http://islamkennis.com/images/free-spins-coins-coin-master_GM406889139.pdfIn PDF document text
    • http://islamkennis.com/images/how-to-get-verified-on-tiktok-for-free_GM835599320.pdfIn PDF document text
    • http://islamkennis.com/images/minecraft-skins-download-free_GM479516143.pdfIn PDF document text
    • http://islamkennis.com/images/coin-master-daily-free-spin-app_GM406889139.pdfIn PDF document text
    • http://islamkennis.com/images/how-to-get-minecraft-for-free-on-xbox-one_GM479516143.pdfIn PDF document text
    • http://islamkennis.com/images/rbx-free-robux_GM431946152.pdfIn PDF document text
    • http://islamkennis.com/images/how-to-get-free-robux-no-verification_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_off00002952.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2952 22336 bytes
SHA-256: ec3874ce49ff45c9692f9bd3e004fbc18ff2065b694dda2cd88a688901d71c7c
font_01_sfnt_off00005b19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B19 18564 bytes
SHA-256: f0545bb50d1b53ea5a90fdb1f55dd67bfbf281392701ec713f0ee16ca845a558

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