Malicious PDF — malware analysis report

Static analysis result for SHA-256 456a463513ace51b…

MALICIOUS

PDF

41.2 KB Created: 2021-05-11 16:32:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: cec19fd542699a42d598ac927f1c6477 SHA-1: 5eba90ab7cdb7decdf88b1946a61219047dbfbc2 SHA-256: 456a463513ace51bb8b0026b8906e01ac56ea73be508f2a8b16746284ba0eb30
200 Risk Score

Malware Insights

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

This PDF document employs a lure for free game items, presenting a fake CAPTCHA to trick users into interacting with malicious links. The document contains multiple embedded URLs that redirect to potentially malicious sites, including one identified as a known malicious redirector. The primary attack vector appears to be social engineering via a deceptive interface, likely leading to further malware download or exploitation.

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/431946152/free-robux-reddit-game-hack In PDF document text
    • http://mydevice.com.au/images/how-to-get-a-lot-of-robux_GM431946152.pdfIn PDF document text
    • http://mydevice.com.au/images/how-do-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://mydevice.com.au/images/get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://mydevice.com.au/images/hack-coin-master-apk-32_GM406889139.pdfIn PDF document text
    • http://mydevice.com.au/images/coin-master-hack-2021-without-verification_GM406889139.pdfIn PDF document text
    • http://mydevice.com.au/images/minecraft-dungeons-download-free_GM479516143.pdfIn PDF document text
    • http://mydevice.com.au/images/minecraft-story-mode-free-download_GM479516143.pdfIn PDF document text
    • http://mydevice.com.au/images/free-coin-master-spins-2021-link_GM406889139.pdfIn PDF document text
    • http://mydevice.com.au/images/free-printable-roblox-images_GM431946152.pdfIn PDF document text
    • http://mydevice.com.au/images/coin-master-hack-uk_GM406889139.pdfIn PDF document text
    • http://mydevice.com.au/images/how-to-get-free-robux-website_GM431946152.pdfIn PDF document text
    • http://mydevice.com.au/images/coin-master-hack-without-verification-ios_GM406889139.pdfIn PDF document text
    • http://mydevice.com.au/images/free-links-for-free-coins-and-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://mydevice.com.au/images/minecraft-hacked-client-download_GM479516143.pdfIn PDF document text
    • http://mydevice.com.au/images/robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://mydevice.com.au/images/how-to-get-a-refund-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://mydevice.com.au/images/coin-master-app-free-download_GM406889139.pdfIn PDF document text
    • http://mydevice.com.au/images/roblox-catalog-free_GM431946152.pdfIn PDF document text
    • http://mydevice.com.au/images/robux-come_GM431946152.pdfIn PDF document text
    • http://mydevice.com.au/images/coin-master-free-spins-link-today-haktuts_GM406889139.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
font_00_sfnt_off0000476d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x476D 24008 bytes
SHA-256: e67c767c6befbaf7241babef24562ca1af7bb897620089562acc65faf705b7d4
font_01_sfnt_off00007e0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E0A 18412 bytes
SHA-256: c557a72efce44f866a9d9d033701dfd5e052f904d36d096978818f2976e16735

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