Malicious PDF — malware analysis report

Static analysis result for SHA-256 23567fc6afb5aeff…

MALICIOUS

PDF

35.0 KB Created: 2021-06-27 13:46:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 143e2ccd0228681072bbaa9d3509e2a8 SHA-1: 6c1d41b8fbd1b9bb5f6923602aa7af0025848cce SHA-256: 23567fc6afb5aeffd427aeeb7d0f39cb79cb4aaaf57c25600298e042dc38507b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains a lure for a 'game hack generator' that redirects to malicious infrastructure. The document body and heuristics indicate the primary goal is to trick users into visiting a malicious URL. No scripts were extracted from this sample, but the embedded URL is a strong indicator of a phishing or redirection attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/how-to-download-roblox-ccv3-hack-game-hack In PDF document text
    • http://www.buapit.ac.th/UserFiles/File/free-roblox-accounts-with-robux-2021_GM431946152.pdfIn PDF document text
    • http://www.buapit.ac.th/UserFiles/File/how-to-get-daily-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.buapit.ac.th/UserFiles/File/how-do-you-hack-in-roblox-by-using-a-phone_GM431946152.pdfIn PDF document text
    • http://www.buapit.ac.th/UserFiles/File/make-free-robux_GM431946152.pdfIn PDF document text
    • http://www.buapit.ac.th/UserFiles/File/roblox-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://www.buapit.ac.th/UserFiles/File/free-robux-code-genrator_GM431946152.pdfIn PDF document text
    • http://www.buapit.ac.th/UserFiles/File/minecraft-bedrock-edition-free-with-java_GM479516143.pdfIn PDF document text
    • http://www.buapit.ac.th/UserFiles/File/roblox-free-dollars_GM431946152.pdfIn PDF document text
    • http://www.buapit.ac.th/UserFiles/File/all-links-for-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.buapit.ac.th/UserFiles/File/daily-free-spin-coin-master-link_GM406889139.pdfIn PDF document text
    • http://www.buapit.ac.th/UserFiles/File/coin-master-mod-apk-latest-hack-with-unlimited-free-spins_GM406889139.pdfIn PDF document text
    • http://www.buapit.ac.th/UserFiles/File/minecraft-hack-download_GM479516143.pdfIn PDF document text
    • http://www.buapit.ac.th/UserFiles/File/minecraft-free-download-2021_GM479516143.pdfIn PDF document text
    • http://www.buapit.ac.th/UserFiles/File/roblox-hacked-accounts-list_GM431946152.pdfIn PDF document text
    • http://www.buapit.ac.th/UserFiles/File/coin-master-village-4_GM406889139.pdfIn PDF document text
    • http://www.buapit.ac.th/UserFiles/File/robux-cheats-no-verification_GM431946152.pdfIn PDF document text
    • http://www.buapit.ac.th/UserFiles/File/how-to-get-free-robux-on-roblox-mobile-2021_GM431946152.pdfIn PDF document text
    • http://www.buapit.ac.th/UserFiles/File/minecraft-free-edition_GM479516143.pdfIn PDF document text
    • http://www.buapit.ac.th/UserFiles/File/free-roblox-accounts-dantdm_GM431946152.pdfIn PDF document text
    • http://www.buapit.ac.th/UserFiles/File/how-to-get-free-robux-on-computer-website_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 7

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_off000030ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30AB 22276 bytes
SHA-256: 446db1e15970d0faf434ec364754f926325c152849606bdc0f7c323f545cb3f7
font_01_sfnt_off00006245.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6245 19448 bytes
SHA-256: 6ca02aed8686de62710c337f39c5705d050da8a596327560b1c7980077093cd9

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