Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec560298d30ca745…

MALICIOUS

PDF

33.7 KB Created: 2021-07-19 10:01:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 6dc4abb23cfc7b6a515c4c47d883b0e1 SHA-1: 28f623687e9f8482dbb0adaaac56b0e8771ac895 SHA-256: ec560298d30ca7459a4dfaa5c1189c69db1695ae3aed9af9bcefb388ec8d4e21
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to a known malicious redirector infrastructure, disguised as a "game hack" or "Robux generator" lure. The document body explicitly contains the malicious URL and a call to action to "CLICK HERE TO ACCESS ROBUX GENERATOR". This indicates a phishing or scam attempt to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9627

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/how-to-hack-someones-roblox-account-game-hack In PDF document text
    • https://www.trendsfashionusa.com/uploaded_files/userfiles/files/minecraft-com-free_GM479516143.pdfIn PDF document text
    • https://www.trendsfashionusa.com/uploaded_files/userfiles/files/get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • https://www.trendsfashionusa.com/uploaded_files/userfiles/files/get-free-robux-com_GM431946152.pdfIn PDF document text
    • https://www.trendsfashionusa.com/uploaded_files/userfiles/files/how-to-get-minecraft-for-free-on-android_GM479516143.pdfIn PDF document text
    • https://www.trendsfashionusa.com/uploaded_files/userfiles/files/coin-master-free-coins-and-spins-app_GM406889139.pdfIn PDF document text
    • https://www.trendsfashionusa.com/uploaded_files/userfiles/files/free-robux-offers_GM431946152.pdfIn PDF document text
    • https://www.roblox.com/my/tasksIn 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_off00002b62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2B62 23160 bytes
SHA-256: 9982ee16301e8fbfed3e4cc817c3d094a279a336392553266f8900592e621e8b
font_01_sfnt_off00005f7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F7E 19036 bytes
SHA-256: 12128b37427caf1a34b7c31be821b3a06bea494ab0cf868aefd1ca4319add4fc

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