Malicious PDF — malware analysis report

Static analysis result for SHA-256 b23469aa89043c48…

MALICIOUS

PDF

42.0 KB Created: 2021-05-23 02:44:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 44d73709ab982e54949b7934e149e628 SHA-1: babf628eb4c28f968ce4b074efffd85fc90faf09 SHA-256: b23469aa89043c48b5dea5b77cdca11b2ecd7e5063008e7de2f5e64f6b5b7b75
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, disguised as 'free generator / game hack' content. The document body and heuristics indicate a lure to download or access resources from these malicious sites. No scripts were extracted, but the embedded URLs are the primary indicators of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7353

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/free-modded-minecraft-server-game-hack In PDF document text
    • https://bancroftandsons.com/images/facebook-coin-master_GM406889139.pdfIn PDF document text
    • https://bancroftandsons.com/images/coin-master-hack-without-verification-code_GM406889139.pdfIn PDF document text
    • https://bancroftandsons.com/images/free-coin-master-links_GM406889139.pdfIn PDF document text
    • https://bancroftandsons.com/images/coin-master-links-that-don-t-expire_GM406889139.pdfIn PDF document text
    • https://bancroftandsons.com/images/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://freegiftcodes.euIn 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000355a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x355A 30444 bytes
SHA-256: 28244bd470c976f1b2960d5c5b1e9410fd0bc6353cf37c070d3618fa105982b6
font_01_sfnt_off000079ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79EE 2880 bytes
SHA-256: 60b105f23d7c6c3680b6804fe43f53dd5dd8f270366462d13461838bcdf434f1
font_02_sfnt_off000083e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83E3 18000 bytes
SHA-256: 088756902f929cbb0d1c0fa5d7f6f3d7dd891fd3cb3329064cb278e0751f8302

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