Malicious PDF — malware analysis report

Static analysis result for SHA-256 0fee196a979dbbdd…

MALICIOUS

PDF

43.3 KB Created: 2021-04-26 11:44:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20
MD5: d83f1ec8c2b57f43b1fc4d7a80369205 SHA-1: bcb115d7bd3b755623b64bd6c1500e3f32ee8b5e SHA-256: 0fee196a979dbbdde0554680152db49e821308b7ea4a28275eace8b0dd6304d6
168 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to a malicious redirector, disguised as a 'free generator' or 'game hack' for Roblox. The document body and heuristics indicate a lure designed to entice users to click on these links, likely leading to further malicious content or downloads. No scripts were extracted, but the presence of malicious redirector links and the lure strongly suggest a phishing or social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9868

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/invisibleble-hack-roblox-game-hack In PDF document text
    • https://lib-stie.yai.ac.id/repository/free-small-amount-of-robux-fre.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/roblox-best-free-outfits.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/is-there-a-free-trial-for-roblox-bc.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/join-my-roblox-group-for-free-robux.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/roblox-how-to-get-a-group-for-free.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/best-free-dominus-in-roblox.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/roblox-bee-simulator-hack-download.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/how-to-get-free-robux-2021-september.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/anarchy-roblox-hacks-site-v3rmillionnet.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/pastebin-free-roblox-accounts-2021.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004050.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4050 24960 bytes
SHA-256: 0f8edd68e92d51702f40d10eaa58d7f4875770d168806938f83c5fc240f4ccf5
font_01_sfnt_off00007a4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A4D 3884 bytes
SHA-256: 40b61f8938bd710dc29dc58ba3fde91c245a6a69596ec569b4d27c769ca417cf
font_02_sfnt_off000086f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86F5 18416 bytes
SHA-256: b162d384d9466b8a8954a5e9d2e1aa4488e96a33e2f3482f8dcdc61adaa065f3

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