Malicious PDF — malware analysis report

Static analysis result for SHA-256 e97a74a933c83111…

MALICIOUS

PDF

42.1 KB Created: 2021-05-11 07:00:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 37df217a2f899f475b485ab5740d6576 SHA-1: c15dd90fde6aee52373c21b042218ba7bd770e9d SHA-256: e97a74a933c831112c066e80d11c5fb71cbc9f661727325d131f649e026c708a
220 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external websites, many of which are structured as SEO-optimized PDF documents related to game hacks and free currency generators. One primary URL, 'https://netcdn.xyz/app/479516143/how-to-download-minecraft-hacks-game-hack', is identified as a malicious redirector. The document body and heuristics suggest a lure for users seeking game cheats, which is a common pretext for distributing malware or conducting phishing. No scripts were extracted, but the embedded links and the nature of the lures strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 5

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/479516143/how-to-download-minecraft-hacks-game-hack In PDF document text
    • http://www.boic.nl/images/how-to-hack-to-get-robux_GM431946152.pdfIn PDF document text
    • http://www.boic.nl/images/coin-master-spin-link-today_GM406889139.pdfIn PDF document text
    • http://www.boic.nl/images/coin-master-apk-hack-2021-ios_GM406889139.pdfIn PDF document text
    • http://www.boic.nl/images/coin-master-free-100-spin_GM406889139.pdfIn PDF document text
    • http://www.boic.nl/images/i-robux_GM431946152.pdfIn PDF document text
    • http://www.boic.nl/images/how-to-get-800-robux-for-free_GM431946152.pdfIn PDF document text
    • http://www.boic.nl/images/daily-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://www.boic.nl/images/is-minecraft-free-on-switch_GM479516143.pdfIn PDF document text
    • http://www.boic.nl/images/free-robux-hacker-us_GM431946152.pdfIn PDF document text
    • http://www.boic.nl/images/free-robux-gift-card-generator_GM431946152.pdfIn PDF document text
    • http://www.boic.nl/images/coin-master-daily-free-spins-link-today-2021_GM406889139.pdfIn PDF document text
    • http://www.boic.nl/images/minecraft-bedrock-for-free_GM479516143.pdfIn PDF document text
    • http://www.boic.nl/images/minecraft-java-code-free_GM479516143.pdfIn PDF document text
    • http://www.boic.nl/images/robux-com-free-robux_GM431946152.pdfIn PDF document text
    • http://www.boic.nl/images/free-robux-codes-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://www.boic.nl/images/free-robux-codes-no-verification_GM431946152.pdfIn PDF document text
    • http://www.boic.nl/images/roblox-top_GM431946152.pdfIn PDF document text
    • http://www.boic.nl/images/how-to-make-free-robux_GM431946152.pdfIn PDF document text
    • http://www.boic.nl/images/how-to-make-robux_GM431946152.pdfIn PDF document text
    • http://www.boic.nl/images/how-to-hack-coin-master-computer_GM406889139.pdfIn PDF document text
    • https://playhack.in/minecraftIn 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_003_off00004940.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4940 24724 bytes
SHA-256: ef358e3ee8f49a2a59c4331a6e49f86959c7e8b9c6914788679b0864975adf48
font_01_sfnt_off000081ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81CA 18460 bytes
SHA-256: 201e47ea1bc759f6ab60629fe707baeeae03fa46224cbd2752ecc215bd4960d2

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