Malicious PDF — malware analysis report

Static analysis result for SHA-256 26365627efba086c…

MALICIOUS

PDF

43.5 KB Created: 2021-05-12 01:07:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: b95855296a4b253c2aa8313bd2255e2b SHA-1: ac6da8134e49d2f430a40ec2388b1c791a49055b SHA-256: 26365627efba086ce56c0a3f382c6321392d2855f350e7e1a274bc0923919b63
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors and infrastructure, specifically promoting 'free game hacks' and generators. The ML classifier also flagged this PDF as malicious. While no scripts were explicitly extracted, the embedded URLs and the nature of the lures suggest an attempt to redirect users to potentially malicious sites for further exploitation or credential harvesting.

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/479516143/minecraft-survival-free-game-hack In PDF document text
    • http://ozonizarint.com/images/free-robux-no-email_GM431946152.pdfIn PDF document text
    • http://ozonizarint.com/images/free-robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://ozonizarint.com/images/withdraw-robux_GM431946152.pdfIn PDF document text
    • http://ozonizarint.com/images/rewards-roblox_GM431946152.pdfIn PDF document text
    • http://ozonizarint.com/images/robuxmatchcom-free-robux_GM431946152.pdfIn PDF document text
    • http://ozonizarint.com/images/games-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://ozonizarint.com/images/how-to-get-free-robux-on-ipad_GM431946152.pdfIn PDF document text
    • http://ozonizarint.com/images/free-coin-master-spins-link_GM406889139.pdfIn PDF document text
    • http://ozonizarint.com/images/free-coin-master-gifts_GM406889139.pdfIn PDF document text
    • http://ozonizarint.com/images/25-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://ozonizarint.com/images/weird-roblox_GM431946152.pdfIn PDF document text
    • http://ozonizarint.com/images/how-to-install-minecraft-for-free-on-ios_GM479516143.pdfIn PDF document text
    • http://ozonizarint.com/images/coin-master-free-pet-snacks_GM406889139.pdfIn PDF document text
    • http://ozonizarint.com/images/can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://ozonizarint.com/images/roblox-gang-rape_GM431946152.pdfIn PDF document text
    • http://ozonizarint.com/images/coin-master-free-spins-and-chips_GM406889139.pdfIn PDF document text
    • http://ozonizarint.com/images/easy-ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://ozonizarint.com/images/coin-master-hack-2021-free_GM406889139.pdfIn PDF document text
    • http://ozonizarint.com/images/free-spin-coin-master-apk_GM406889139.pdfIn PDF document text
    • http://ozonizarint.com/images/how-to-earn-robux-fast_GM431946152.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000048b6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48B6 23956 bytes
SHA-256: 5a8a18d74c84433c1ea26516a44a22a47b7902816722e3be7fa4ab318e418cf8
font_01_sfnt_off00007ee8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EE8 2856 bytes
SHA-256: 8c5d9bcb386d88c7f99323d8d482e46ea21dea038a5b842744dd5d39b26b2c44
font_02_sfnt_off000088bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88BF 17896 bytes
SHA-256: ae22d75e7686c6a225539c41209adbc632e29a8ac914593cbcf88605996e660b

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