Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce33b8b6c6e20a5b…

MALICIOUS

PDF

45.0 KB Created: 2021-05-14 11:39:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 4403d4c1f80d5067340392464a2c1237 SHA-1: d3b7bdcb05a276c658cc436568e18535bf3f2f65 SHA-256: ce33b8b6c6e20a5b1776adfbe18d427970b763e27f99094ae04ffb536bc70f1b
220 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure of free game hacks and Robux to entice users to click on malicious links. The document contains numerous links to redirector infrastructure, including the primary URL https://netcdn.xyz/app/431946152/win-free-robux-game-hack, which is associated with malicious activity. The PDF structure and embedded links suggest an attempt to drive traffic to potentially malicious sites, likely for further exploitation or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/win-free-robux-game-hack In PDF document text
    • http://mansatupati.my.id/__statics/gudangsoal/files/free-robux-codes-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://mansatupati.my.id/__statics/gudangsoal/files/how-to-hack-coin-master-spin_GM406889139.pdfIn PDF document text
    • http://mansatupati.my.id/__statics/gudangsoal/files/coin-master-free-coin-and-spin-app_GM406889139.pdfIn PDF document text
    • http://mansatupati.my.id/__statics/gudangsoal/files/coin-master-hack-ios-jailbreak_GM406889139.pdfIn PDF document text
    • http://mansatupati.my.id/__statics/gudangsoal/files/apps-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://mansatupati.my.id/__statics/gudangsoal/files/get-me-robux_GM431946152.pdfIn PDF document text
    • http://mansatupati.my.id/__statics/gudangsoal/files/how-to-cheat-in-roblox_GM431946152.pdfIn PDF document text
    • http://mansatupati.my.id/__statics/gudangsoal/files/boost9-com-roblox-hack_GM431946152.pdfIn PDF document text
    • http://mansatupati.my.id/__statics/gudangsoal/files/how-to-get-free-items-on-roblox_GM431946152.pdfIn PDF document text
    • http://mansatupati.my.id/__statics/gudangsoal/files/free-robux-for-kids-no-verification_GM431946152.pdfIn PDF document text
    • http://mansatupati.my.id/__statics/gudangsoal/files/rape-simulator_GM431946152.pdfIn PDF document text
    • http://mansatupati.my.id/__statics/gudangsoal/files/hack-coin-master-without-human-verification_GM406889139.pdfIn PDF document text
    • http://mansatupati.my.id/__statics/gudangsoal/files/john-doe-roblox-hacker_GM431946152.pdfIn PDF document text
    • http://mansatupati.my.id/__statics/gudangsoal/files/minecraft-free-play-now_GM479516143.pdfIn PDF document text
    • http://mansatupati.my.id/__statics/gudangsoal/files/free-roblox-shirt-templates-2021_GM431946152.pdfIn PDF document text
    • http://mansatupati.my.id/__statics/gudangsoal/files/coin-master-hack-download_GM406889139.pdfIn PDF document text
    • http://mansatupati.my.id/__statics/gudangsoal/files/roblox-avatar-com_GM431946152.pdfIn PDF document text
    • http://mansatupati.my.id/__statics/gudangsoal/files/free-robux-generator-no-survey-no-download-no-human-verification_GM431946152.pdfIn PDF document text
    • http://mansatupati.my.id/__statics/gudangsoal/files/roblox-promo-codes-free-robux_GM431946152.pdfIn PDF document text
    • http://mansatupati.my.id/__statics/gudangsoal/files/how-do-i-get-free-robux-on-roblox_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_off00004923.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4923 30944 bytes
SHA-256: cac549b50bf550f12efb1f4ab6b82832312c4238861e07057b94d8280cbfee67
font_01_sfnt_off00008dbb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DBB 18332 bytes
SHA-256: abf0b8ed31f5047ebf3c1463738251345f2a3e8ea43e3f17fb5c5b26bb0b5a7e

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