Malicious PDF — malware analysis report

Static analysis result for SHA-256 1dd7c084cd3f1345…

MALICIOUS

PDF

44.1 KB Created: 2021-04-27 01:38:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 86f4024627bfeb57fc96b0858a068c62 SHA-1: 7c85253daf634b4b051dde0e3ff87c8a9e23d099 SHA-256: 1dd7c084cd3f134517bf2fff5d6f3fb34b4f293424b40acce9c475aaa3a4b5c5
168 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains lures related to 'Robux hacks' and 'game generators', directing users to a malicious URL. The presence of multiple embedded URLs and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful content. No scripts were extracted, but the document structure and embedded links strongly suggest a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9936

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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 https://netcdn.xyz/app/431946152/robux-hack-no-human-verification-android-game-hack In PDF document text
    • http://www.saburai.ac.id/elibrary//repository/free-rich-roblox-accounts-2021.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/how-do-you-get-the-hack-no-roblox.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/roblox-redeem-toy-codes-free.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/how-to-hack-into-files-to-get-robux.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/roblox-hack-and-cheats-apk.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/hack-roblox-2021-youtube.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/sword-fighting-roblox-game-free-to-copy.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/how-to-cheat-on-you-roblox-girlfriend.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/roblox-hack-de-dragon-ball-rage.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/free-roblox-toy-redemption-codes.pdfIn 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
stream_003_off00004295.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4295 29668 bytes
SHA-256: 29b09109a40b930e1fe97a3a0915e6e8606f1b7dad1f0d3d041344b77d7425ef
font_01_sfnt_off000088a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88A0 19040 bytes
SHA-256: 8438a43b2a7d9a9736146fffd763bcaeef37d3a3e43eac64e6425f78197a98c5

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