Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6858038489635f3…

MALICIOUS

PDF

42.7 KB Created: 2021-05-18 01:00:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: a2bd2b15eb054e3fa19e3820ede1ae23 SHA-1: 5c63d791b328bce680ff6588d9717d030e48d65d SHA-256: f6858038489635f3f1f6c4c9ae79ee6e58f429d077605143e690ef3606b1d4b4
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that are identified as malicious redirectors, specifically targeting users with lures for free in-game currency and hacks. The document body and embedded URLs strongly suggest a phishing or scam attempt designed to drive traffic to potentially harmful sites. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the lures indicate a high likelihood of malicious intent, possibly involving further exploitation or credential harvesting.

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/431946152/free-robux-sites-that-work-game-hack In PDF document text
    • http://finettifrs.it/images/free-spins-for-coin-master-ios_GM406889139.pdfIn PDF document text
    • http://finettifrs.it/images/freespincoin-masterlinkdownload_GM406889139.pdfIn PDF document text
    • http://finettifrs.it/images/roblox-robux-generator-http-freerobuxgenerator-xyz_GM431946152.pdfIn PDF document text
    • http://finettifrs.it/images/how-to-get-free-coins-in-minecraft_GM479516143.pdfIn PDF document text
    • http://finettifrs.it/images/free-robux-no-human-verification-generator_GM431946152.pdfIn PDF document text
    • http://finettifrs.it/images/free-robux-working_GM431946152.pdfIn PDF document text
    • http://finettifrs.it/images/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://finettifrs.it/images/coin-master-game-free-spin-download_GM406889139.pdfIn PDF document text
    • http://finettifrs.it/images/hack-coin-master-for-iphone_GM406889139.pdfIn PDF document text
    • http://finettifrs.it/images/rbx-roblox_GM431946152.pdfIn PDF document text
    • http://finettifrs.it/images/uprobuxcom-free-robux_GM431946152.pdfIn PDF document text
    • http://finettifrs.it/images/free-coins--spins-coin-master_GM406889139.pdfIn PDF document text
    • http://finettifrs.it/images/coin-master-links-free-spins_GM406889139.pdfIn PDF document text
    • http://finettifrs.it/images/coin-master-hack-xyz_GM406889139.pdfIn PDF document text
    • http://finettifrs.it/images/how-to-get-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://finettifrs.it/images/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://finettifrs.it/images/free-robux-site_GM431946152.pdfIn PDF document text
    • http://finettifrs.it/images/free-robux-come_GM431946152.pdfIn PDF document text
    • http://finettifrs.it/images/roblox-play-now-for-free_GM431946152.pdfIn PDF document text
    • http://finettifrs.it/images/coin-master-hack-tool-pc_GM406889139.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000048f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x48F9 25036 bytes
SHA-256: 75223f3988f6467423b16f286769f42263c18feedaec0930cec6a78433fc4461
font_01_sfnt_off00008258.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8258 19000 bytes
SHA-256: c0bc6bb0706fab35ff455fc4816471a1ab7f6ae4486f691ef98043b3efa3f18d

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