Malicious PDF — malware analysis report

Static analysis result for SHA-256 2efda418b021899b…

MALICIOUS

PDF

35.9 KB Created: 2021-05-23 21:42:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 17481344cb55b0d45d430320d2f48b29 SHA-1: 980907ea84a1cbac94bed799a210a0902832e1e8 SHA-256: 2efda418b021899b418681ddb98f1fb34447cdc4bbd5ef78d3f66a8e1d27b891
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to redirector domains, specifically promoting 'game hacks' and 'free generators' for popular games like Minecraft and Roblox. These links are designed to lure users to potentially malicious websites. The presence of embedded URLs and the ML classifier's high confidence score indicate a malicious intent to redirect users to harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9492

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-minecraft-for-free-on-pc-game-hack In PDF document text
    • http://mypizzaoven.com/images/free-robux-websites-2021_GM431946152.pdfIn PDF document text
    • http://mypizzaoven.com/images/free-24-7-minecraft-server_GM479516143.pdfIn PDF document text
    • http://mypizzaoven.com/images/free-robux-roblox-promo-codes_GM431946152.pdfIn PDF document text
    • http://mypizzaoven.com/images/all-minecraft-handbooks_GM479516143.pdfIn PDF document text
    • http://mypizzaoven.com/images/coin-master-event-hack_GM406889139.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
stream_002_off00003481.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3481 24568 bytes
SHA-256: 81d74d2427ca97559a743615bad0ca327653dc754a562f9866f365ca6db6864d
font_01_sfnt_off00006c09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C09 18028 bytes
SHA-256: b9422edf84f92072c73e95211b34a92c0a0e69f845a714fee2d613fe1b4264b0

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