Malicious PDF — malware analysis report

Static analysis result for SHA-256 25d73f1bdd22f120…

MALICIOUS

PDF

44.7 KB Created: 2021-05-16 02:11:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 2e7b03cfc82efbd4a502e67ce0125d9f SHA-1: 5d1de79748f333ba3d17ff8a03c2e5baab9bf4eb SHA-256: 25d73f1bdd22f120f1472a7190e15f4f782866c1ebeea5c77a27ea520ffe3569
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to known malicious infrastructure, specifically promoting "free Robux codes generator" and "game hacks". The document body and heuristics indicate a lure designed to trick users into visiting these sites, which likely host further malicious content or exploits. No scripts were extracted, but the presence of malicious redirector links is a strong indicator of malicious intent.

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 https://netcdn.xyz/app/431946152/free-robux-codes-generator-no-verification-game-hack In PDF document text
    • http://library.vsi.esdm.go.id/katalog/slims7_cendana-master/repository/coin-master-hack-software_GM406889139.pdfIn PDF document text
    • http://library.vsi.esdm.go.id/katalog/slims7_cendana-master/repository/minecraft-wurst-client_GM479516143.pdfIn PDF document text
    • http://library.vsi.esdm.go.id/katalog/slims7_cendana-master/repository/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://library.vsi.esdm.go.id/katalog/slims7_cendana-master/repository/minecraft-nintendo-switch-digital-code-free_GM479516143.pdfIn PDF document text
    • http://library.vsi.esdm.go.id/katalog/slims7_cendana-master/repository/free-downloads-for-coin-master-daily-rewards_GM406889139.pdfIn PDF document text
    • http://library.vsi.esdm.go.id/katalog/slims7_cendana-master/repository/coin-master-free-spins-2021-ios_GM406889139.pdfIn PDF document text
    • http://library.vsi.esdm.go.id/katalog/slims7_cendana-master/repository/free-coin-master-hacks-no-verification_GM406889139.pdfIn PDF document text
    • http://library.vsi.esdm.go.id/katalog/slims7_cendana-master/repository/real-coin-master-hacks_GM406889139.pdfIn PDF document text
    • http://library.vsi.esdm.go.id/katalog/slims7_cendana-master/repository/free-minecraft-alt-accounts_GM479516143.pdfIn PDF document text
    • http://library.vsi.esdm.go.id/katalog/slims7_cendana-master/repository/minecraft-marketplace-free_GM479516143.pdfIn PDF document text
    • http://library.vsi.esdm.go.id/katalog/slims7_cendana-master/repository/coin-master-coin-hack_GM406889139.pdfIn PDF document text
    • http://library.vsi.esdm.go.id/katalog/slims7_cendana-master/repository/free-attacks-coin-master_GM406889139.pdfIn PDF document text
    • http://library.vsi.esdm.go.id/katalog/slims7_cendana-master/repository/free-spins-coin-master-links_GM406889139.pdfIn PDF document text
    • http://library.vsi.esdm.go.id/katalog/slims7_cendana-master/repository/roblox-free-clothes-hack_GM431946152.pdfIn PDF document text
    • http://library.vsi.esdm.go.id/katalog/slims7_cendana-master/repository/coin-master-hack-ios-no-verification_GM406889139.pdfIn PDF document text
    • http://library.vsi.esdm.go.id/katalog/slims7_cendana-master/repository/coin-master-mod-free-download_GM406889139.pdfIn PDF document text
    • http://library.vsi.esdm.go.id/katalog/slims7_cendana-master/repository/hack-coin-master-game-apk-download_GM406889139.pdfIn PDF document text
    • http://library.vsi.esdm.go.id/katalog/slims7_cendana-master/repository/how-do-you-hack-minecraft_GM479516143.pdfIn PDF document text
    • http://library.vsi.esdm.go.id/katalog/slims7_cendana-master/repository/haktuts-coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • http://library.vsi.esdm.go.id/katalog/slims7_cendana-master/repository/free-spins-coins-coin-master_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_off00004de9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4DE9 26036 bytes
SHA-256: fa483d4b38fabac01681f6462d8b2468e378d12681bf22b127177d37c0421364
font_01_sfnt_off00008ac9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AC9 18776 bytes
SHA-256: a4a7f46a8ec4e4fe0089faa119d4be48f59112184e2c655defb35f5102acccee

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