Malicious PDF — malware analysis report

Static analysis result for SHA-256 43dbc8973899663e…

MALICIOUS

PDF

35.7 KB Created: 2021-05-24 07:22:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 1903d2ac7a393d5a9dff7d9ea7ec586a SHA-1: 025475bf5d65f2d49df6db93faf403d81003af98 SHA-256: 43dbc8973899663e32311264489c43542650f7d97cf285323737143ebdc0ffce
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links that redirect to malicious websites, specifically promoting 'free Robux generators' and game hacks. The document body and heuristics indicate a lure to trick users into visiting these sites, likely to download further malware or engage in credential harvesting. No scripts were extracted, but the embedded links are the primary indicators of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9648

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 https://netcdn.xyz/app/431946152/free-robux-generator-2021-game-hack In PDF document text
    • http://asiasieja.pl/images/free-minecraft-gift-codes_GM479516143.pdfIn PDF document text
    • http://asiasieja.pl/images/play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://asiasieja.pl/images/fan-page-coin-master_GM406889139.pdfIn PDF document text
    • http://asiasieja.pl/images/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://asiasieja.pl/images/roblox-free-robux-website_GM431946152.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
stream_002_off0000318f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x318F 24268 bytes
SHA-256: 9d60b5f14b29038c4e39d6a9e058a1e65c5d4b64c5c61bf9312d59834a863c0e
font_01_sfnt_off00006863.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6863 18748 bytes
SHA-256: fca1806ffff7593a0a2d811b077fe14576afb362c0c2e8ffc695fbf8edc3964d

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