Malicious PDF — malware analysis report

Static analysis result for SHA-256 d25884334dbf5514…

MALICIOUS

PDF

42.6 KB Created: 2021-05-14 17:11:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: a544f54841a888f2adee67dd77e8aabe SHA-1: 6d2a74e7509acb6a022b41b862a85f4fb63f3d82 SHA-256: d25884334dbf5514a02aa9a263ba1760b6587a3ad672d231a41fcf56a13222b3
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'free generator / game hack' lures. The embedded URLs and the document body text strongly suggest a phishing or scam attempt designed to trick users into visiting malicious sites. No scripts were extracted, but the presence of numerous malicious redirector links and the ML classification indicate a high likelihood of malicious intent.

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/robux-xyz-game-hack In PDF document text
    • http://croatia-flyfishing.com/files/how-to-get-free-robux-app_GM431946152.pdfIn PDF document text
    • https://www.croatia-flyfishing.com/files/free-robux-websites-that-work_GM431946152.pdfIn PDF document text
    • https://www.croatia-flyfishing.com/files/free-robux-generator-com-roblox-hack_GM431946152.pdfIn PDF document text
    • http://croatia-flyfishing.com/files/minecraft-coins-free_GM479516143.pdfIn PDF document text
    • http://croatia-flyfishing.com/files/coin-master-reward-link-2021_GM406889139.pdfIn PDF document text
    • http://croatia-flyfishing.com/files/coin-master-rewards-free-spins_GM406889139.pdfIn PDF document text
    • http://croatia-flyfishing.com/files/cmaster-club-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://www.croatia-flyfishing.com/files/i-cant-get-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://croatia-flyfishing.com/files/how-to-hack-people-in-roblox_GM431946152.pdfIn PDF document text
    • http://croatia-flyfishing.com/files/minecraft-reach-hack_GM479516143.pdfIn PDF document text
    • http://croatia-flyfishing.com/files/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://croatia-flyfishing.com/files/minecraft-handbook_GM479516143.pdfIn PDF document text
    • http://croatia-flyfishing.com/files/ways-to-earn-robux_GM431946152.pdfIn PDF document text
    • https://www.croatia-flyfishing.com/files/free-spins-on-coin-master-links-2021_GM406889139.pdfIn PDF document text
    • http://croatia-flyfishing.com/files/robux-free-gift-card_GM431946152.pdfIn PDF document text
    • http://croatia-flyfishing.com/files/free-robux-that-actually-works_GM431946152.pdfIn PDF document text
    • http://croatia-flyfishing.com/files/free-robux-no-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://croatia-flyfishing.com/files/free-spins-coin-master-daily_GM406889139.pdfIn PDF document text
    • https://www.croatia-flyfishing.com/files/minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • https://www.croatia-flyfishing.com/files/coin-master-free-spins-without-verification_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
stream_003_off000048d9.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48D9 27124 bytes
SHA-256: 4507d02140d31d52df3eb040e4babbdbe82afcb2ad1f567ba3b45c8edcf8dee7
font_01_sfnt_off0000849a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x849A 18112 bytes
SHA-256: ca7f5f9618641a98a9c19d491d3cdfb459cfe3a3cc083d97c385a6405de8606e

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