Malicious PDF — malware analysis report

Static analysis result for SHA-256 64559722d224f412…

MALICIOUS

PDF

35.9 KB Created: 2021-05-17 06:00:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-26
MD5: e51a65f206a07394cc12a1ba86182c69 SHA-1: b1184ff4e4ea070bf4da2bf1daef6d62071674d5 SHA-256: 64559722d224f41260f25b7737392bf6ac3be8665d679d99c1252df2d769ff3b
212 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links designed to lure users into clicking on game hack generators and free spin offers, likely as a phishing or scam pretext. The embedded URLs point to redirectors and SEO-linked PDF farms, indicating a coordinated effort to drive traffic to potentially malicious sites. No scripts were extracted, but the document's structure and content strongly suggest a social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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.
  • 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.
  • 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/coin-master-free-spins-coins-game-hack In PDF document text
    • https://www.dossiermedicina.it/images/coin-master-heaven-free-spins-today_GM406889139.pdfIn PDF document text
    • https://www.dossiermedicina.it/images/how-to-win-attack-madness-in-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://www.dossiermedicina.it/images/coin-master-free-spins-promo-code_GM406889139.pdfIn PDF document text
    • https://www.dossiermedicina.it/images/how-to-get-free-robux-as-a-kid_GM431946152.pdfIn PDF document text
    • https://www.dossiermedicina.it/images/wurst-minecraft_GM479516143.pdfIn PDF document text
    • https://www.dossiermedicina.it/images/coin-master-free-spins-without-human-verification_GM406889139.pdfIn PDF document text
    • https://www.dossiermedicina.it/images/coin-master-gold-cards-free-2021_GM406889139.pdfIn PDF document text
    • https://www.dossiermedicina.it/images/download-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • https://www.dossiermedicina.it/images/hack-coin-master-ios_GM406889139.pdfIn PDF document text
    • https://www.dossiermedicina.it/images/free-robux-generator-no-human-verification-or-surveys_GM431946152.pdfIn PDF document text
    • https://www.dossiermedicina.it/images/how-to-download-minecraft-windows-10-edition-for-free_GM479516143.pdfIn PDF document text
    • https://www.dossiermedicina.it/images/minecraft-survival-hacks_GM479516143.pdfIn PDF document text
    • https://www.dossiermedicina.it/images/free-coin-master-spin-app_GM406889139.pdfIn PDF document text
    • https://www.dossiermedicina.it/images/free-minecraft-printables_GM479516143.pdfIn PDF document text
    • https://www.dossiermedicina.it/images/what-is-a-minecraft-client_GM479516143.pdfIn PDF document text
    • https://www.dossiermedicina.it/images/free-roblox-accounts-with-robux_GM431946152.pdfIn PDF document text
    • https://www.dossiermedicina.it/images/how-to-make-a-minecraft-server-for-free-java_GM479516143.pdfIn PDF document text
    • https://www.dossiermedicina.it/images/mcpe-com_GM479516143.pdfIn PDF document text
    • https://www.dossiermedicina.it/images/coin-master-tiradas-gratis-link_GM406889139.pdfIn PDF document text
    • https://www.dossiermedicina.it/images/boost9-com-roblox-hack_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004a0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4A0A 24684 bytes
SHA-256: 65cb8bb7349ac175fc277c8cdc3ed6ae43cb324cf0c79458b8e876e2f467f94f

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