Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ca50b17801db027…

MALICIOUS

PDF

44.7 KB Created: 2021-05-14 09:37:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 69c77515525607bc68245df157bd5e7c SHA-1: 30c36b25ff5cde572e342170783f17ec3f4284e8 SHA-256: 7ca50b17801db027a09d041d6db87285340a7845fafb793ba237a3dd06772beb
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'free generator / game hack' lures. The document body and embedded URLs strongly suggest a phishing or scam attempt designed to trick users into visiting potentially harmful sites. While no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9632

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/free-coin-master-gifts-game-hack In PDF document text
    • https://www.elternrat-bolligen.ch/images/roblox-hack-apk_GM431946152.pdfIn PDF document text
    • https://www.elternrat-bolligen.ch/images/como-hackear-coin-master-ios_GM406889139.pdfIn PDF document text
    • https://www.elternrat-bolligen.ch/images/free-robux-picture_GM431946152.pdfIn PDF document text
    • https://www.elternrat-bolligen.ch/images/free-robux-com-roblox_GM431946152.pdfIn PDF document text
    • https://www.elternrat-bolligen.ch/images/roblox-ban_GM431946152.pdfIn PDF document text
    • https://www.elternrat-bolligen.ch/images/get-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.elternrat-bolligen.ch/images/hack-coin-master-spin_GM406889139.pdfIn PDF document text
    • https://www.elternrat-bolligen.ch/images/coin-master-tool-hack_GM406889139.pdfIn PDF document text
    • https://www.elternrat-bolligen.ch/images/coin-master-hack-here_GM406889139.pdfIn PDF document text
    • https://www.elternrat-bolligen.ch/images/coin-master-rewards-free-spins_GM406889139.pdfIn PDF document text
    • https://www.elternrat-bolligen.ch/images/free-minecraft-realms-to-join_GM479516143.pdfIn PDF document text
    • https://www.elternrat-bolligen.ch/images/robux-hack-free-robux_GM431946152.pdfIn PDF document text
    • https://www.elternrat-bolligen.ch/images/coin-master-links-2021_GM406889139.pdfIn PDF document text
    • https://www.elternrat-bolligen.ch/images/how-do-we-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.elternrat-bolligen.ch/images/coin-master-fan-page_GM406889139.pdfIn PDF document text
    • https://www.elternrat-bolligen.ch/images/static-moonactive-net-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.elternrat-bolligen.ch/images/how-to-get-free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • https://www.elternrat-bolligen.ch/images/free-spins-and-coins-coin-master-links_GM406889139.pdfIn PDF document text
    • https://www.elternrat-bolligen.ch/images/hacked-client-for-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • https://www.elternrat-bolligen.ch/images/free-robux-hack-no-human-verification-or-survey_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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004ca3.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4CA3 24244 bytes
SHA-256: 7f422417729ab1a63cd4c240254d6cb934cdeb3165d1c063af85b7855645778d
font_01_sfnt_off000083ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83FF 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off00008db1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DB1 17712 bytes
SHA-256: a02a8482596092bbe2b4efe270951b6f574c255f03fc3b97eeb87af209467e86

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