Malicious PDF — malware analysis report

Static analysis result for SHA-256 a181c895295cdaff…

MALICIOUS

PDF

34.2 KB Created: 2021-06-26 10:35:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: a0136796c17d9e593792ec98aa2ea55e SHA-1: 1213bd1e404f135721d1f9b3c9031903dd078866 SHA-256: a181c895295cdaffce2ded6072fd4e5e41f311e5d52e4cc3e58c05bac568fc23
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple embedded links that redirect to malicious infrastructure, specifically promoting game hacks and generators. The primary redirector URL identified is http://netcdn.co/app/431946152/business-simulator-roblox-cheat-game-hack. The document body and heuristics indicate a lure designed to trick users into clicking these links, likely leading to further malware downloads or phishing attempts.

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/business-simulator-roblox-cheat-game-hack In PDF document text
    • http://opac.salatiga.go.id/slims7/repository/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/free-spins-on-coin-master-game_GM406889139.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/coin-master-hack-activegamer_GM406889139.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/roblox-cheat-engine-bypass-roblox_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/how-to-get-free-roblox-glitch_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/free-robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/hack-robux-free-2021_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/how-to-get-free-robux-fast-and-easy_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/coin-free-master_GM406889139.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/hack-de-dinero-para-jailbreak-roblox-noviembre_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/free-robux-games-on-roblox_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/hack-coin-master-game-apk_GM406889139.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/free-coins_GM406889139.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/roblox-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/ways-to-hack-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/rbx-land-free-robux_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/are-there-any-coin-master-hacks-that-actually-work_GM406889139.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/descargar-hack-coin-master_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
font_00_sfnt_off00002f09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F09 22216 bytes
SHA-256: e73ee208927c400d24c88f1c34ab563a577ed5b9ddf8c74e60b87b5a82491480
font_01_sfnt_off00006026.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6026 19276 bytes
SHA-256: d87f1eb9255bc075945de7cf1552cd96184b92cae5ba2ee2d17f855b2e2e3201

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