Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7633cc975652ecd…

MALICIOUS

PDF

39.7 KB Created: 2021-05-11 00:34:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-26
MD5: da065133326b3e0486e54f3d7f114e34 SHA-1: 46fc8086b3753dc926d0928912bc81c25a54cc45 SHA-256: d7633cc975652ecd3964914e99e7e5562c2269d0c76e043cfb2923633f4da5ba
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains embedded links that redirect to known malicious infrastructure, specifically promoting "game hacks" and "cheats". The document body and heuristics indicate a lure for potentially unwanted or malicious content, likely intended to trick users into downloading further malware or visiting scam sites. The presence of multiple redirector links strongly suggests a malicious intent to funnel users to harmful content.

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/406889139/coin-master-cheats-game-hack In PDF document text
    • http://asiasieja.pl/images/how-to-get-free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://asiasieja.pl/images/free-robux-offers_GM431946152.pdfIn PDF document text
    • http://asiasieja.pl/images/javascript-free-robux_GM431946152.pdfIn PDF document text
    • http://asiasieja.pl/images/robuxy-com-free-robux_GM431946152.pdfIn PDF document text
    • http://asiasieja.pl/images/minecraft-free-demo_GM479516143.pdfIn PDF document text
    • http://asiasieja.pl/images/moon-static-coin-master-generator-hacks-free_GM406889139.pdfIn PDF document text
    • http://asiasieja.pl/images/httpswwwurcouponsdealcom202103coinmasterfreespinandcoinlinkshtml_GM406889139.pdfIn PDF document text
    • http://asiasieja.pl/images/roblox-controversy_GM431946152.pdfIn PDF document text
    • http://asiasieja.pl/images/free-clothing-on-roblox_GM431946152.pdfIn PDF document text
    • http://asiasieja.pl/images/coin-master-free-spins-iphone_GM406889139.pdfIn PDF document text
    • http://asiasieja.pl/images/appsmobinfo-coinmasterhack-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://asiasieja.pl/images/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://asiasieja.pl/images/free-robux-just-click_GM431946152.pdfIn PDF document text
    • http://asiasieja.pl/images/free-spin-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://asiasieja.pl/images/to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://asiasieja.pl/images/how-to-download-minecraft-for-free-on-iphone_GM479516143.pdfIn PDF document text
    • http://asiasieja.pl/images/apps-for-free-robux_GM431946152.pdfIn PDF document text
    • http://asiasieja.pl/images/coin-master-hack-without-human-verification-2021_GM406889139.pdfIn PDF document text
    • http://asiasieja.pl/images/coin-master-hack-https-coinms-net_GM406889139.pdfIn PDF document text
    • http://asiasieja.pl/images/easy-way-to-get-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000446f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x446F 23932 bytes
SHA-256: 8d547a80bbc397016540ea3199be550e68cc1b3ce618f214bf5d2a1d5684c9ba
font_01_sfnt_off00007a41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A41 17712 bytes
SHA-256: 0cf37999a32b0b26e6dcf722a916a3c4a254350d50e55584564eaaa0ec63890c

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