Malicious PDF — malware analysis report

Static analysis result for SHA-256 0066988a807c0746…

MALICIOUS

PDF

36.7 KB Created: 2021-07-01 13:15:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 71544aa575724fbdda2545981690c42d SHA-1: 922c72902ef31f678c922ac49c02fb404fb8a2e5 SHA-256: 0066988a807c0746fcc45d16f7532aac4e4d568deb99dd293cfea12d11f3bf39
160 Risk Score

Malware Insights

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

The PDF contains multiple links to a known malicious redirector infrastructure, specifically advertising 'robux hacks' and 'game hacks'. The document body and embedded URLs reinforce this lure, aiming to trick users into downloading further malicious content. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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.co/app/431946152/robux-hack-with-inspect-element-game-hack In PDF document text
    • https://elearning10.man1kotalubuklinggau.sch.id/__statics/gudangsoal/files/roblox-helicopter-free_GM431946152.pdfIn PDF document text
    • https://elearning10.man1kotalubuklinggau.sch.id/__statics/gudangsoal/files/free-robux-robot-verification_GM431946152.pdfIn PDF document text
    • https://elearning10.man1kotalubuklinggau.sch.id/__statics/gudangsoal/files/hack-coin-master-spin-apk_GM406889139.pdfIn PDF document text
    • https://elearning10.man1kotalubuklinggau.sch.id/__statics/gudangsoal/files/minecraft-redeem-code-free-2021_GM479516143.pdfIn PDF document text
    • https://elearning10.man1kotalubuklinggau.sch.id/__statics/gudangsoal/files/where-can-i-get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning10.man1kotalubuklinggau.sch.id/__statics/gudangsoal/files/coin-master-hack-ios-12_GM406889139.pdfIn PDF document text
    • https://elearning10.man1kotalubuklinggau.sch.id/__statics/gudangsoal/files/proxo-cheat-roblox-download_GM431946152.pdfIn PDF document text
    • https://elearning10.man1kotalubuklinggau.sch.id/__statics/gudangsoal/files/easy-points-gg_GM431946152.pdfIn PDF document text
    • https://elearning10.man1kotalubuklinggau.sch.id/__statics/gudangsoal/files/free-coin-master-stuff_GM406889139.pdfIn PDF document text
    • https://elearning10.man1kotalubuklinggau.sch.id/__statics/gudangsoal/files/minecraft-windows-10-edition-hacked-client_GM479516143.pdfIn PDF document text
    • https://elearning10.man1kotalubuklinggau.sch.id/__statics/gudangsoal/files/robux-hack-fr_GM431946152.pdfIn PDF document text
    • https://elearning10.man1kotalubuklinggau.sch.id/__statics/gudangsoal/files/how-ro-get-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning10.man1kotalubuklinggau.sch.id/__statics/gudangsoal/files/free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://elearning10.man1kotalubuklinggau.sch.id/__statics/gudangsoal/files/funbloxxyz-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning10.man1kotalubuklinggau.sch.id/__statics/gudangsoal/files/free-catalog-items-roblox-2021-december_GM431946152.pdfIn PDF document text
    • https://elearning10.man1kotalubuklinggau.sch.id/__statics/gudangsoal/files/how-to-hack-any-roblox-account_GM431946152.pdfIn PDF document text
    • https://elearning10.man1kotalubuklinggau.sch.id/__statics/gudangsoal/files/how-do-i-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://elearning10.man1kotalubuklinggau.sch.id/__statics/gudangsoal/files/games-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning10.man1kotalubuklinggau.sch.id/__statics/gudangsoal/files/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://elearning10.man1kotalubuklinggau.sch.id/__statics/gudangsoal/files/5-roblox-games-that-give-you-free-robux_GM431946152.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
font_00_sfnt_off0000349f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x349F 22984 bytes
SHA-256: 5cc54b09fbcd58b8856d2dd800673b7e732ebc215a0ef9503a8a32c3b3fa53fc
font_01_sfnt_off0000685b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x685B 19820 bytes
SHA-256: ec33c4df370e4a4ecf09b375e8eed64ddb91ecd5730dd022933589b9bab2f2c7

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