Malicious PDF — malware analysis report

Static analysis result for SHA-256 1fadda5c895c763b…

MALICIOUS

PDF

39.7 KB Created: 2021-04-25 23:43:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 993c2f43313264ebb9b5db530725cfec SHA-1: d788fe1fe1e4f02dc32a8a62a50f8b9064a73cf5 SHA-256: 1fadda5c895c763bfbf5cd18584efd8043834afa59ddfb71688882f64d223bca
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to a known malicious redirector infrastructure, specifically advertising 'Roblox Hacks' and 'Free Robux'. The document body and embedded links strongly suggest a lure to a scam or phishing site, likely designed to trick users into downloading further malware or revealing credentials. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9941

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 https://netcdn.xyz/app/431946152/4-op-roblox-hacks-game-hack In PDF document text
    • https://lib-stie.yai.ac.id/repository/how-to-get-script-hacks-on-roblox.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/roblox-free-800-robux.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/roblox-ro-hero-academia-hack.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/poki-with-free-roblox.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/roblox-actual-robux-hack.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/roblox-free-bots.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/how-to-get-100-robux-free-2021.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/hack-hack-roblox.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/free-infinate-robux-regukar.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/how-to-get-free-robux-no-human-verification-on-mobile.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
stream_003_off0000404d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x404D 25060 bytes
SHA-256: 49fa1c9d481428d567b0ab302695ff1c83e4a7b2aa731d4b0dd6c76a2d69323f
font_01_sfnt_off00007881.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7881 18420 bytes
SHA-256: d2bcc7601b9c8c3a17df0faf459597d76ade8e4bcf78d498ec11c477d6fbe4ae

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