Malicious PDF — malware analysis report

Static analysis result for SHA-256 80694a4707f135eb…

MALICIOUS

PDF

45.7 KB Created: 2021-06-08 22:51:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 3f2dc11702e876b2eb845536d5b7fce6 SHA-1: 6acc752fa9417b67b828130da2e2fcabd3919c1e SHA-256: 80694a4707f135ebe9376087845279bc9371cdce9f31c15446f17b9edaf3d91e
160 Risk Score

Malware Insights

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

This PDF document contains multiple links to a known malicious redirector infrastructure, disguised as a 'free generator' or 'game hack'. The document body explicitly mentions 'free Robux' and 'game hack', indicating a lure for users seeking such content. The primary malicious action observed is the redirection to potentially harmful websites, likely to deliver further malware or conduct phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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.tw/app/431946152/how-to-get-free-robux-legit-not-a-scam-game-hack In PDF document text
    • http://opac.salatiga.go.id/slims7//repository/earn-rbx_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/free-robux-hack_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/minecraft-pe-hack-client_GM479516143.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/free-roblox-accounts-with-robux_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/coin-master-for-pc-free-download_GM406889139.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/free-robux-websites-that-actually-work_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/free-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/coin-master-15-free-spin-link-of-last-5-days_GM406889139.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/tiktok-follower-bot-free_GM835599320.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/free-spin-link-in-coin-master_GM406889139.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/pokemon-go-free-evolution_GM1094591345.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/oprewards-com-roblox_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/minecraft-pe-apk-free-download_GM479516143.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/mcpe-116_GM479516143.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/coin-master-hack-dot-xyz_GM406889139.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/free-robux-codes-2021-not-used_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/free-spins-and-coins-coin-master_GM406889139.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/free-coin-master-gold-cards_GM406889139.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/coin-master-real-hack_GM406889139.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
stream_004_off000052e6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x52E6 25340 bytes
SHA-256: 6bf4f78c985b4e2676081a9117e8e0264e48e649ed2d4a1aaf9663168a668eab
font_01_sfnt_off00008d52.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D52 19176 bytes
SHA-256: 6a5d02df5104407c5e5d0dd82ab71c81e3e3f1a86080c6b5f06c6a4e3d04f820

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