Malicious PDF — malware analysis report

Static analysis result for SHA-256 4caf4a27846eac7b…

MALICIOUS

PDF

41.9 KB Created: 2021-05-13 07:44:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 81c7ebecb3e536a3d5a86a0f76202353 SHA-1: 353eb9e45adac20860490a02f8488a9959b46a90 SHA-256: 4caf4a27846eac7b770aa2379e9509d4d4592e8c47d3e168bf340f1df7449140
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links that redirect to malicious infrastructure, specifically promoting game hacks and free currency generators. The heuristic firings indicate that these links are known malicious redirectors and are designed as lures. While no scripts were extracted, the document body and embedded URLs strongly suggest a phishing or scam attempt to trick users into visiting malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/406889139/village-4-coin-master-game-hack In PDF document text
    • http://laplazuelacafe.com/images/easy-robux-hack_GM431946152.pdfIn PDF document text
    • http://laplazuelacafe.com/images/free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://laplazuelacafe.com/images/haktuts-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://laplazuelacafe.com/images/wurst-112_GM479516143.pdfIn PDF document text
    • http://laplazuelacafe.com/images/minecraft-fly-hack_GM479516143.pdfIn PDF document text
    • http://laplazuelacafe.com/images/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://laplazuelacafe.com/images/master-coin-free-spin-daily_GM406889139.pdfIn PDF document text
    • http://laplazuelacafe.com/images/cm-free-spins_GM406889139.pdfIn PDF document text
    • http://laplazuelacafe.com/images/how-to-download-minecraft-for-free-on-mac_GM479516143.pdfIn PDF document text
    • http://laplazuelacafe.com/images/microsoft-free-robux_GM431946152.pdfIn PDF document text
    • http://laplazuelacafe.com/images/free-robux-generator-2021-no-survey_GM431946152.pdfIn PDF document text
    • http://laplazuelacafe.com/images/wurst-115_GM479516143.pdfIn PDF document text
    • http://laplazuelacafe.com/images/get-more-robux_GM431946152.pdfIn PDF document text
    • http://laplazuelacafe.com/images/coin-master-hack-programmers_GM406889139.pdfIn PDF document text
    • http://laplazuelacafe.com/images/free-robux-com_GM431946152.pdfIn PDF document text
    • http://laplazuelacafe.com/images/free-roblox-accounts-with-robux-that-work-not-banned_GM431946152.pdfIn PDF document text
    • http://laplazuelacafe.com/images/coin-master-hack-https-coinms-net_GM406889139.pdfIn PDF document text
    • http://laplazuelacafe.com/images/minecraft-coins-free_GM479516143.pdfIn PDF document text
    • http://laplazuelacafe.com/images/coin-master-free-spins-links-app_GM406889139.pdfIn PDF document text
    • http://laplazuelacafe.com/images/download-minecraft-bedrock_GM479516143.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_off00004752.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4752 26532 bytes
SHA-256: 6a235805a3e84626b4badbbe33b3ccada5a377f84cd31753017f02b90731424b
font_01_sfnt_off000081d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81D6 18104 bytes
SHA-256: 4663c03cf6a7f36f606ed333490f7780d1655a74df360db77ae51fe1c1360529

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