Malicious PDF — malware analysis report

Static analysis result for SHA-256 aee5dbec4d75b2ff…

MALICIOUS

PDF

32.2 KB Created: 2021-07-19 07:43:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 1ffd666d764c4e7161bddd478d51a843 SHA-1: 6c5652ee2e078465e063e23d95a94cc200a3fcbe SHA-256: aee5dbec4d75b2ff8650e658072db1d2b36199846d5cd8868f8ef21e7843b6ea
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one identified as a malicious redirector, designed to lure users with promises of free game currency and hacks. The document body text and embedded URLs strongly suggest a phishing or scam attempt, likely to lead users to a malicious website or download further unwanted content. No scripts were extracted, but the presence of multiple redirector links indicates a high likelihood of malicious intent.

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/406889139/get-free-spins-coin-master-game-hack In PDF document text
    • https://force-seniorklub.dk/images/how-to-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://force-seniorklub.dk/images/free-robux-websites-2021_GM431946152.pdfIn PDF document text
    • https://force-seniorklub.dk/images/minecraft-windows-10-free-code_GM479516143.pdfIn PDF document text
    • http://force-seniorklub.dk/images/how-to-get-verified-on-tiktok-for-free_GM835599320.pdfIn PDF document text
    • http://force-seniorklub.dk/images/minecraft-classic-free_GM479516143.pdfIn PDF document text
    • https://force-seniorklub.dk/images/coin-master-daily-free-spins-link-app_GM406889139.pdfIn PDF document text
    • https://force-seniorklub.dk/images/websites-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://force-seniorklub.dk/images/download-minecraft-free-hiapphere_GM479516143.pdfIn PDF document text
    • https://force-seniorklub.dk/images/how-to-get-minecraft-for-free-on-ps4_GM479516143.pdfIn PDF document text
    • https://force-seniorklub.dk/images/free-tiktok-app_GM835599320.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_off00002b63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2B63 22284 bytes
SHA-256: 6f11b638492a770974aec02dbc1f8cb58bfdfd3dc9103edf83ffac6ce2727323
font_01_sfnt_off00005ce7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CE7 17884 bytes
SHA-256: b0210710b9f532dde69bab3e54691bd54d84b0d7d990975f20826afd1ba27450

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