Malicious PDF — malware analysis report

Static analysis result for SHA-256 c05406fb2964d1ab…

MALICIOUS

PDF

42.4 KB Created: 2021-05-13 08:59:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: b79bade54dcc5c99ce2c6bd33289bc7a SHA-1: e5be9a1a5ae74054244e6ede1981b4896146c262 SHA-256: c05406fb2964d1ab10299cf65dee7dcbd22ccb48d0b1c1bd6ae8521a351f96bf
200 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document employs social engineering tactics by presenting itself as a generator for game hacks and free currency, a common lure for malicious content. It displays a fake CAPTCHA to trick users into interacting with malicious links, which are known to lead to redirectors. The document contains numerous embedded URLs pointing to sites offering similar lures, suggesting a campaign focused on driving traffic to potentially harmful content or further malware downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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.
  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • 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-free-gold-cards-game-hack In PDF document text
    • http://hilro.co.za/images/coin-master-hack-version-download_GM406889139.pdfIn PDF document text
    • http://hilro.co.za/images/minecraft-bedrock-free-download_GM479516143.pdfIn PDF document text
    • http://hilro.co.za/images/free-robux-place_GM431946152.pdfIn PDF document text
    • http://hilro.co.za/images/roblox-t-shirt-free_GM431946152.pdfIn PDF document text
    • http://hilro.co.za/images/coin-master-free-stuff_GM406889139.pdfIn PDF document text
    • http://hilro.co.za/images/mcpe-116_GM479516143.pdfIn PDF document text
    • http://hilro.co.za/images/minecraft-pocket-apk_GM479516143.pdfIn PDF document text
    • http://hilro.co.za/images/coin-master-get-free-spins_GM406889139.pdfIn PDF document text
    • http://hilro.co.za/images/master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://hilro.co.za/images/coin-master-daily-free-cards_GM406889139.pdfIn PDF document text
    • http://hilro.co.za/images/free-robux-generator-com-roblox-hack_GM431946152.pdfIn PDF document text
    • http://hilro.co.za/images/minecraft-free-computer-game_GM479516143.pdfIn PDF document text
    • http://hilro.co.za/images/free-roblox-animations_GM431946152.pdfIn PDF document text
    • http://hilro.co.za/images/working-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://hilro.co.za/images/how-to-get-free-minecraft-coins_GM479516143.pdfIn PDF document text
    • http://hilro.co.za/images/how-to-win-robux_GM431946152.pdfIn PDF document text
    • http://hilro.co.za/images/coin-master-hack-ios-10_GM406889139.pdfIn PDF document text
    • http://hilro.co.za/images/free-roblox-groups_GM431946152.pdfIn PDF document text
    • http://hilro.co.za/images/rbx-hut-promo-codes_GM431946152.pdfIn PDF document text
    • http://hilro.co.za/images/robux-generator-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://coinmasterspinandcoin.comIn 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_off00004af1.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4AF1 25084 bytes
SHA-256: 9b73ffef4c04e0a968608869d5e3f418b93e618bf8a2b8cb4a49d6af17d5ecec
font_01_sfnt_off00008482.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8482 17960 bytes
SHA-256: aba9a61c61b61fea048b73d77d5e297f3d5a3a83c57e433c8854d820da1f91b9

Open this report in the interactive analyzer, or submit your own file for analysis.