Malicious PDF — malware analysis report

Static analysis result for SHA-256 efb2f362acf2175a…

MALICIOUS

PDF

33.9 KB Created: 2021-07-05 22:56:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 29442c1f5dbf733ba818ad9e1047e0c7 SHA-1: 78ca77174289f29604c662e24cdca4331e230826 SHA-256: efb2f362acf2175a4d720700b0db490e9651ac7e86ea1e17b55c7b8756847993
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains a lure for game hacks and free currency, directing users to a malicious URL. The ML classifier strongly indicates maliciousness, and the embedded URLs suggest a phishing or scam attempt. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/835599320/tiktok-free-view-editor-game-hack PDF link annotation
    • http://opac.salatiga.go.id/slims7/repository/robux-hack-2021-december_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/oprewards-robux_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/minecraft-tower-defense-2-hacked_GM479516143.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/how-did-someone-used-lots-of-hacks-in-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/roblox-hacks-2021_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/how-to-hack-other-people-roblox-accoubt_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/funny-hacker-scripts-roblox_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/robux-roblox-secret-hacks_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/como-hackear-roblox-apk-mediafire-para-ir-mas-rapido_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/best-free-roblox-tycoons_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/cheat-buddy-roblox-download_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/hey-google-how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/roblox-free-rpbux_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/roblox-clothing-free-edit-avatar_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/free-robux-gift-cards-reddit_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/free-bc-roblox-november-2021_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/roblox-hacks-for-craftwars_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/hacking-menu-for-roblox_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/robux-for-surveys_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/coin-master-heaven_GM406889139.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_off000030c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30C9 21904 bytes
SHA-256: b153dbdf4ca081fef9b2a5d72d7be7b533e47027c8f03624d60a9679b765a36c
font_01_sfnt_off000060f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60F5 18444 bytes
SHA-256: ef9f8098c253c39d8e4eba1f98209e77e3d18739e6143122cb099ee716698d12

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