Malicious PDF — malware analysis report

Static analysis result for SHA-256 af9da0ae02361396…

MALICIOUS

PDF

34.9 KB Created: 2021-06-19 15:34:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 435b5851ecd93ec66881458bb6e53ff4 SHA-1: 53eca47cf0f80ae2c56eff27fb283a8fd9af596e SHA-256: af9da0ae02361396481a4ba65c6693a54f74a001ad5b425aa9c75ff0290c8106
220 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links to external sites, many of which are part of a link farm designed to lure users with promises of game hacks and free currency. One primary URL, http://netcdn.co/app/431946152/how-to-exploit-in-roblox-free-game-hack, is identified as a malicious redirector. The document body also contains a call-to-action phrase, 'CLICK HERE TO ACCESS ROBUX GENERATOR TQ', further reinforcing the deceptive nature of the lure.

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 http://netcdn.co/app/431946152/how-to-exploit-in-roblox-free-game-hack In PDF document text
    • http://livsgnistans.se/images/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://livsgnistans.se/images/this-roblox-shirt-gives-free-domimnus_GM431946152.pdfIn PDF document text
    • http://livsgnistans.se/images/free-robux-no-survey-no-password_GM431946152.pdfIn PDF document text
    • http://livsgnistans.se/images/free-robux-without-verify_GM431946152.pdfIn PDF document text
    • http://livsgnistans.se/images/free-girl-body-in-roblox_GM431946152.pdfIn PDF document text
    • http://livsgnistans.se/images/hacks-for-da-hood-roblox_GM431946152.pdfIn PDF document text
    • http://livsgnistans.se/images/get-free-cards-in-coin-master_GM406889139.pdfIn PDF document text
    • http://livsgnistans.se/images/how-to-get-minecraft-for-free-on-your-phone_GM479516143.pdfIn PDF document text
    • http://livsgnistans.se/images/will-tiktok-free-view-bot_GM835599320.pdfIn PDF document text
    • http://livsgnistans.se/images/coin-master-hack-co_GM406889139.pdfIn PDF document text
    • http://livsgnistans.se/images/roblox-hack-2021-how-to-get-free-robux-and-more_GM431946152.pdfIn PDF document text
    • http://livsgnistans.se/images/how-to-hack-coin-master-pc_GM406889139.pdfIn PDF document text
    • http://livsgnistans.se/images/how-to-become-a-hacker-in-roblox_GM431946152.pdfIn PDF document text
    • http://livsgnistans.se/images/is-java-minecraft-free_GM479516143.pdfIn PDF document text
    • http://livsgnistans.se/images/how-to-hack-roblox-accounts-2021-easy_GM431946152.pdfIn PDF document text
    • http://livsgnistans.se/images/ash-greninja-free-shopping-in-roblox-on-roblox-shopping-shir_GM431946152.pdfIn PDF document text
    • http://livsgnistans.se/images/how-to-get-robux-for-free-on-laptop-youtube_GM431946152.pdfIn PDF document text
    • http://livsgnistans.se/images/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://livsgnistans.se/images/cheat-engine-original-download-roblox_GM431946152.pdfIn PDF document text
    • http://livsgnistans.se/images/skin-for-roblox-girl-free_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 3

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
font_00_sfnt_off00003372.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3372 21704 bytes
SHA-256: 66f37290d21b01ddf0b45692ae357bc2b6d6cca45db0fd6ca1d4a99eb64db8b5
font_01_sfnt_off000062d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62D1 19216 bytes
SHA-256: 84cbd43fefde96137c802d3b55cad5b1898703b85f1dc543afba33f6f5573994

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