Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a780f2a49391caf…

MALICIOUS

PDF

36.2 KB Created: 2021-05-13 23:46:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-03
MD5: 82475324a733de23fe13ba94c19c5e89 SHA-1: cba83df27ef21da0aecb8d4e8331deb3b5c71b09 SHA-256: 4a780f2a49391caf0f603220a98375c3de89f39dd25c05cc72220439d993b2d9
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to known malicious infrastructure, specifically a lure for a 'free generator / game hack'. The document body and heuristics indicate a social engineering tactic to trick users into visiting a malicious URL. While no scripts were extracted, the presence of malicious redirector links strongly suggests an attempt to deliver a payload or phish for credentials.

Machine Learning

  • Nyx PDF Classifier clean score 0.0283

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/479516143/how-to-get-minecoins-in-minecraft-for-free-game-hack In PDF document text
    • https://sigmaclient.info#2In PDF document text
    • https://flux.today#3In PDF document text
    • https://www.youtIn 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_003_off0000341f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x341F 25252 bytes
SHA-256: 01e5ee49aab1bb21bcf2d6cba9976ea1d4cd94df2f558fa4b9cfa5402a54edd1
font_01_sfnt_off00006d88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D88 17872 bytes
SHA-256: d23bbe04ef3196a5fa54f397c57d78b821aa47262b4b410e5e0dbd5db48197bd

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