Malicious PDF — malware analysis report

Static analysis result for SHA-256 40b4155751274917…

MALICIOUS

PDF

34.1 KB Created: 2021-06-28 05:32:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 5ae4c1fad0a475136fcf6c0773eae532 SHA-1: d9ae6de50ddca9b748f30ee8aeddf80d881598fe SHA-256: 40b4155751274917ae247361f3a6782051b109e56ad9a9e60889435ed9831f65
220 Risk Score

Malware Insights

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

The PDF document contains numerous links, including a critical link to a known malicious redirector infrastructure at http://netcdn.co/app/431946152/hack-de-robux-pastebin-game-hack. The document body and extracted links suggest a lure for game-related cheats and hacks, likely to lead users to a phishing or malware download site. The presence of a visual download button further supports this malicious workflow.

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/hack-de-robux-pastebin-game-hack In PDF document text
    • https://lib.bunghatta.ac.id/app/repository/freespinandcoinblogspotcom-2021-11-coinmasterfreespinandcoinlinkshtml_GM406889139.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/roblox-weight-lift-sim-3-hack_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/roblox-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/roblox-best-exploit-cheat-ever_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/free-links-coin-master_GM406889139.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/how-to-get-infinite-robux_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/how-to-hack-your-own-roblox-account_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/free-tiktok-fans-without-verification_GM835599320.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/hacks-to-get-free-robux-on-roblox-in-2021_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/cute-free-roblox-outfits_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/pokemon-go-free-gift-codes_GM1094591345.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/how-to-get-free-robux-on-roblox-2021-pc_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/free-stuff-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/free-roblox-cheats_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/coin-master-spin-link-free-download_GM406889139.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/coin-master-free-spins-link-today-2021_GM406889139.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/hacks-for-roblox-jailbreak-2021_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/free-robux-download_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/how-to-get-faces-for-free-on-roblox_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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002e6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E6C 22108 bytes
SHA-256: 2964506487f3141f287710ac71e215fea60dc086a3c13ec3a3b90c19b7030ca1
font_01_sfnt_off00005fa7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FA7 19268 bytes
SHA-256: 63c9fce2b3dc29ea967aaa7a14bfd87cc5b2f61fca875bb3eaaaaf1d7f22a45f

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