Malicious PDF — malware analysis report

Static analysis result for SHA-256 e44862e2d6bbb873…

MALICIOUS

PDF

42.4 KB Created: 2021-05-17 20:38:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: b036d28368633f02db56be0b0798fc82 SHA-1: 13bc1699d9bd4d11634bdcc2c9009cc0a0fd515c SHA-256: e44862e2d6bbb8736ae72b0064b192f6ddbac1ca35c7ab3ae41b0f8d519e66a2
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, specifically advertising game hacks and free currency generators. The primary lure appears to be a "free generator / game hack" for Coin Master, directing users to `https://netcdn.xyz/app/406889139/coinmasterfree-game-hack`. The document body and embedded URLs suggest a social engineering tactic to trick users into visiting these malicious sites, likely leading to further malware downloads or phishing attempts. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

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/coinmasterfree-game-hack In PDF document text
    • http://farwesterndistrict.org/images/robux-free-c_GM431946152.pdfIn PDF document text
    • http://farwesterndistrict.org/images/hack-para-coin-master-singapore_GM406889139.pdfIn PDF document text
    • http://farwesterndistrict.org/images/robux-for-kids_GM431946152.pdfIn PDF document text
    • http://farwesterndistrict.org/images/how-to-hack-roblox-for-robux_GM431946152.pdfIn PDF document text
    • http://farwesterndistrict.org/images/mc-update_GM479516143.pdfIn PDF document text
    • http://farwesterndistrict.org/images/free-robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • http://farwesterndistrict.org/images/install-free-game-coin-master_GM406889139.pdfIn PDF document text
    • http://farwesterndistrict.org/images/coin-master-free-spin-link-list_GM406889139.pdfIn PDF document text
    • http://farwesterndistrict.org/images/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://farwesterndistrict.org/images/best-minecraft-hacked-client-2021_GM479516143.pdfIn PDF document text
    • http://farwesterndistrict.org/images/coin-master-hack-mod-apk-unlimited-spin-download_GM406889139.pdfIn PDF document text
    • http://farwesterndistrict.org/images/claim-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://farwesterndistrict.org/images/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://farwesterndistrict.org/images/free-spin-link-coin-master_GM406889139.pdfIn PDF document text
    • http://farwesterndistrict.org/images/free-robux-no-email_GM431946152.pdfIn PDF document text
    • http://farwesterndistrict.org/images/coin-master-free-mighty-lion-card_GM406889139.pdfIn PDF document text
    • http://farwesterndistrict.org/images/free-robux-websites-no-human-verification_GM431946152.pdfIn PDF document text
    • http://farwesterndistrict.org/images/coin-master-sound-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://farwesterndistrict.org/images/coin-master-hack-mobile_GM406889139.pdfIn PDF document text
    • http://farwesterndistrict.org/images/fb-coin-master-free-spins-link_GM406889139.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
stream_003_off00004707.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4707 28332 bytes
SHA-256: 0a30a68c8da682b707177aaaadbc1dc2eacb3b9cddb0c46a510c514e315eaeeb
font_01_sfnt_off000084d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84D7 17808 bytes
SHA-256: ed5fdd5441acd06a3bb02758ac945137dbfa7be696a0962169bf0eb95ec74bb8

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