Malicious PDF — malware analysis report

Static analysis result for SHA-256 02fe4aa3a5548117…

MALICIOUS

PDF

48.9 KB Created: 2021-05-12 12:09:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-16
MD5: b4a5b89a7537c5baa1d73fd14eaa9af4 SHA-1: 221b6ddf6fa49f71dd070f2b106fafb374264fb4 SHA-256: 02fe4aa3a554811791b72a0873311ff99859e9361d9c960a3d9106bc8697459f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors and lures users with promises of game hacks and free generators. The primary link, https://netcdn.xyz/app/406889139/hack-coin-master-game-download-game-hack, is identified as a malicious redirector. The document's content and embedded URLs strongly suggest a phishing or scam attempt designed to lead users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8642

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/hack-coin-master-game-download-game-hack In PDF document text
    • https://gafaseo.com/images/coin-master-free-spin-and-trading-group_GM406889139.pdfIn PDF document text
    • https://gafaseo.com/images/robux-generators-that-actually-work_GM431946152.pdfIn PDF document text
    • https://gafaseo.com/images/promo-codes-for-free-robux_GM431946152.pdfIn PDF document text
    • https://gafaseo.com/images/free-spins-coin-master-links-blogspot_GM406889139.pdfIn PDF document text
    • https://gafaseo.com/images/100-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://gafaseo.com/images/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • https://gafaseo.com/images/coin-master-reward-link_GM406889139.pdfIn PDF document text
    • https://gafaseo.com/images/roblox-studio-free_GM431946152.pdfIn PDF document text
    • https://gafaseo.com/images/best-minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • https://gafaseo.com/images/mosttechs-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://gafaseo.com/images/how-to-get-free-cards-sets-for-coin-master_GM406889139.pdfIn PDF document text
    • https://gafaseo.com/images/how-to-get-free-robux-not-a-scam_GM431946152.pdfIn PDF document text
    • https://gafaseo.com/images/coin-master-online-hack_GM406889139.pdfIn PDF document text
    • https://gafaseo.com/images/coin-master-free-2021-spin-link_GM406889139.pdfIn PDF document text
    • https://gafaseo.com/images/free-robux-no-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://gafaseo.com/images/how-to-get-free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • https://gafaseo.com/images/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • https://gafaseo.com/images/free-robux-generator-no-survey-no-download-no-human-verification_GM431946152.pdfIn PDF document text
    • https://gafaseo.com/images/free-robux-come_GM431946152.pdfIn PDF document text
    • https://gafaseo.com/images/free-minecraft-accounts-2021_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004b4c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B4C 24752 bytes
SHA-256: acca8243680a96c9b061c693267d5ef9edb4467024b6e48420d960106e9b59a2
font_01_sfnt_off00008427.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8427 4028 bytes
SHA-256: a17c2a746d49ac23b23e38a371e32fddecfcd91b10cf42ff6155bff6b8a07e91
font_02_sfnt_off000091c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x91C7 2788 bytes
SHA-256: 6fd7c7f447d66842f81aa8cf197935b17f22157d0c7e9f95622df1b5b4ddf530
font_03_sfnt_off00009bb6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9BB6 18556 bytes
SHA-256: aaade648ef56f1f9167d0db62f5c53722f102658163b7711b8d17774315d1610

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