Malicious PDF — malware analysis report

Static analysis result for SHA-256 f35a5b39cb7cd433…

MALICIOUS

PDF

43.3 KB Created: 2021-05-19 07:18:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 946282146a4ebea0c5df922e66c0e7a8 SHA-1: bbb68c12a2b3728c6f686d23747e8c4350d18966 SHA-256: f35a5b39cb7cd4338e2e73adfc6e195d94ac134d46c5b6e12820cbdfa3e18482
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure related to game hacks and free currency, as indicated by the document body and heuristic firings. It contains multiple links to known malicious redirectors, suggesting an attempt to lead the user to potentially harmful websites. No scripts were extracted, but the presence of embedded URLs and the nature of the lure strongly suggest a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9648

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/1094591345/pokemon-go-free-qwilfish-game-hack In PDF document text
    • http://ines.co.rs/images/bux-free-robux_GM431946152.pdfIn PDF document text
    • http://ines.co.rs/images/roblox-bloxburg-hack_GM431946152.pdfIn PDF document text
    • http://ines.co.rs/images/who-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://ines.co.rs/images/coin-master-fun-hack_GM406889139.pdfIn PDF document text
    • http://ines.co.rs/images/roblox-bux-free_GM431946152.pdfIn PDF document text
    • http://ines.co.rs/images/coin-master-hack-ios-no-jailbreak_GM406889139.pdfIn PDF document text
    • http://ines.co.rs/images/minecraft-114-4-download-free_GM479516143.pdfIn PDF document text
    • http://ines.co.rs/images/download-coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://ines.co.rs/images/cmaster-club-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://ines.co.rs/images/60-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://ines.co.rs/images/minecraft-games-to-play-for-free_GM479516143.pdfIn PDF document text
    • http://ines.co.rs/images/lastrick-com-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://ines.co.rs/images/roblox-robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://ines.co.rs/images/how-to-get-hacks-on-roblox_GM431946152.pdfIn PDF document text
    • http://ines.co.rs/images/what-is-coin-master-app_GM406889139.pdfIn PDF document text
    • http://ines.co.rs/images/roblox-hack-codes_GM431946152.pdfIn PDF document text
    • http://ines.co.rs/images/free-robux-with-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://ines.co.rs/images/free-robux-without-verification_GM431946152.pdfIn PDF document text
    • http://ines.co.rs/images/how-to-get-free-robux-on-pc_GM431946152.pdfIn PDF document text
    • http://ines.co.rs/images/free-coin-master-hacks_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000045e3.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x45E3 24044 bytes
SHA-256: 797e1a6ffd9f8d21aa91c8080b80b5a6567a5682a9a130673eef7c8bc5ce3a6b
font_01_sfnt_off00007c5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C5B 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off0000860d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x860D 18524 bytes
SHA-256: 4ee968a35ee45d248a5a9cb92692f7876209a470b9485e1d071b0bc6c574f8e1

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