Malicious PDF — malware analysis report

Static analysis result for SHA-256 59fb55c1922fc636…

MALICIOUS

PDF

43.1 KB Created: 2021-06-03 10:05:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 1ed3cc561977251d7a6cfad5cffc9a71 SHA-1: aa127995666aaa7946088362de21c194ff580e72 SHA-256: 59fb55c1922fc63658991d4db9780593aae8961405448a74adb7d0922a68d2dd
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 a 'game hack' lure. The presence of a visual download button further supports the deceptive nature of the document. While no scripts were directly extracted, the PDF structure and embedded URLs strongly indicate a phishing or scam attempt designed to lead users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9874

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.online/app/406889139/coin-master-links-for-today-game-hack In PDF document text
    • http://www.vista-design.hr/files/coin-master-free-spins-link-no-verification-2021_GM406889139.pdfIn PDF document text
    • http://www.vista-design.hr/files/hack-coin-master-free_GM406889139.pdfIn PDF document text
    • https://www.vista-design.hr/files/is-minecraft-realms-free_GM479516143.pdfIn PDF document text
    • https://www.vista-design.hr/files/roblox-free-iteams_GM431946152.pdfIn PDF document text
    • https://www.vista-design.hr/files/claim-robux_GM431946152.pdfIn PDF document text
    • http://www.vista-design.hr/files/free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://www.vista-design.hr/files/appsmobinfo-coinmasterhack-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.vista-design.hr/files/free-pokemon-go-accounts-level-30_GM1094591345.pdfIn PDF document text
    • http://www.vista-design.hr/files/robux-games_GM431946152.pdfIn PDF document text
    • http://www.vista-design.hr/files/free-robux-real-2021_GM431946152.pdfIn PDF document text
    • http://www.vista-design.hr/files/free-coin-master-spins-link_GM406889139.pdfIn PDF document text
    • http://www.vista-design.hr/files/hack-coin-master-using-pc_GM406889139.pdfIn PDF document text
    • https://www.vista-design.hr/files/how-to-hack-roblox_GM431946152.pdfIn PDF document text
    • https://www.vista-design.hr/files/tiktok-free-like-2021_GM835599320.pdfIn PDF document text
    • https://www.vista-design.hr/files/minecraft-jar-free_GM479516143.pdfIn PDF document text
    • https://www.vista-design.hr/files/how-to-get-gold-cards-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.vista-design.hr/files/coin-master-spin-hack-link_GM406889139.pdfIn PDF document text
    • http://www.vista-design.hr/files/buy-tiktok-followers-free_GM835599320.pdfIn PDF document text
    • https://www.vista-design.hr/files/minecraft-gun-games-free_GM479516143.pdfIn PDF document text
    • http://www.vista-design.hr/files/free-roblox-passwords_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
stream_004_off0000501b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x501B 24676 bytes
SHA-256: 0769ed5439b94f47ecdfc1668151abe71809e5d3b41435d483ee93c4ebe4c1c7
font_01_sfnt_off000085c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85C4 18232 bytes
SHA-256: 79bece74db2dd822c76612a1664280e186053a2a893c50b912a800105546df15

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