Malicious PDF — malware analysis report

Static analysis result for SHA-256 e053c0713a742c40…

MALICIOUS

PDF

42.4 KB Created: 2021-05-10 13:44:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 93f52f1afb2867ae7eb0a133d1946703 SHA-1: 6e4c8229dc54809d2ce2e6bfee131bb2d69ddc9a SHA-256: e053c0713a742c4044931b458819e3c5ca00a72600651a482f656084abf965d0
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to known malicious infrastructure, specifically promoting game hacks and generators. The document body and heuristics indicate a lure to click these links, likely leading to further malware download or phishing. No scripts were extracted, but the embedded URLs are the primary indicators of malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9025

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/406889139/how-to-hack-coin-master-root-game-hack In PDF document text
    • http://professionalpilottraining.com.au/images/free-roblox-accounts-2021-with-robux_GM431946152.pdfIn PDF document text
    • http://professionalpilottraining.com.au/images/how-do-u-hack-roblox_GM431946152.pdfIn PDF document text
    • http://professionalpilottraining.com.au/images/coin-master-hack-without-verification-2021_GM406889139.pdfIn PDF document text
    • http://professionalpilottraining.com.au/images/how-to-get-free-food-for-foxy-in-coin-master_GM406889139.pdfIn PDF document text
    • http://professionalpilottraining.com.au/images/free-robux-promo-codes-2021_GM431946152.pdfIn PDF document text
    • http://professionalpilottraining.com.au/images/is-there-any-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://professionalpilottraining.com.au/images/2021-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00003d03.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3D03 25624 bytes
SHA-256: 27b9518876e1856bc21c21140ff08cc9043cdf07d2480de6a3acedb12df311f2
font_01_sfnt_off00007704.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7704 4124 bytes
SHA-256: f638292427b755dd7bf77c43889fd908fca246f613cf97d028c0485efebd01ce
font_02_sfnt_off00008509.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8509 17880 bytes
SHA-256: 8d1f2374cc0ee299ef3230cc600176bd8051b87b632aac22800208bfbee90f8f

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