Malicious PDF — malware analysis report

Static analysis result for SHA-256 e66fe8a5b899ea2d…

MALICIOUS

PDF

45.0 KB Created: 2021-06-03 06:45:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 74aecdfa729cf73d0f06809737ecb583 SHA-1: c8b894583f263be7f2fa2ac1ff08141d8bdd72e9 SHA-256: e66fe8a5b899ea2da8164133b1729bc21c39507199f5babe6fddd4c28df0b579
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to malicious infrastructure, specifically promoting game hacks and generators. The primary lure is a link to 'how-to-get-free-spins-on-coin-master-2021-iphone-game-hack', which is a known malicious redirector. While no scripts were explicitly extracted, the PDF structure and heuristic firings indicate a malicious redirector workflow, likely intended to lead users to phishing or malware download sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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.online/app/406889139/how-to-get-free-spins-on-coin-master-2021-iphone-game-hack In PDF document text
    • http://www.waelhamadehgallery.com/uploaded_files/userfiles/files/pubg-uc-yatr_GM1330123889.pdfIn PDF document text
    • http://www.waelhamadehgallery.com/uploaded_files/userfiles/files/robux-generator-that-works_GM431946152.pdfIn PDF document text
    • http://www.waelhamadehgallery.com/uploaded_files/userfiles/files/free-coins-and-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://www.waelhamadehgallery.com/uploaded_files/userfiles/files/100-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://www.waelhamadehgallery.com/uploaded_files/userfiles/files/free-spin-coin-master-link-download_GM406889139.pdfIn PDF document text
    • http://www.waelhamadehgallery.com/uploaded_files/userfiles/files/how-do-you-get-roebucks_GM431946152.pdfIn PDF document text
    • http://www.waelhamadehgallery.com/uploaded_files/userfiles/files/coin-master-free-spins-april-2021_GM406889139.pdfIn PDF document text
    • http://www.waelhamadehgallery.com/uploaded_files/userfiles/files/free-robux-com_GM431946152.pdfIn PDF document text
    • http://www.waelhamadehgallery.com/uploaded_files/userfiles/files/free-coin-master-gifts_GM406889139.pdfIn PDF document text
    • http://www.waelhamadehgallery.com/uploaded_files/userfiles/files/how-to-get-minecraft-realms-for-free_GM479516143.pdfIn PDF document text
    • http://www.waelhamadehgallery.com/uploaded_files/userfiles/files/coin-master-free-spin-realme-products_GM406889139.pdfIn PDF document text
    • http://www.waelhamadehgallery.com/uploaded_files/userfiles/files/robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://www.waelhamadehgallery.com/uploaded_files/userfiles/files/today-free-spin-coin-master_GM406889139.pdfIn PDF document text
    • http://www.waelhamadehgallery.com/uploaded_files/userfiles/files/www-roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://www.waelhamadehgallery.com/uploaded_files/userfiles/files/coin-master-free-pet-snacks_GM406889139.pdfIn PDF document text
    • http://www.waelhamadehgallery.com/uploaded_files/userfiles/files/getrobux-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://www.waelhamadehgallery.com/uploaded_files/userfiles/files/robux-gift-card-free_GM431946152.pdfIn PDF document text
    • http://www.waelhamadehgallery.com/uploaded_files/userfiles/files/hack-coin-master-download_GM406889139.pdfIn PDF document text
    • http://www.waelhamadehgallery.com/uploaded_files/userfiles/files/free-hair-roblox_GM431946152.pdfIn PDF document text
    • http://www.waelhamadehgallery.com/uploaded_files/userfiles/files/how-to-hack-coins-in-archery-master-3d_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_004_off00005173.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5173 25632 bytes
SHA-256: 5903249f369e57f9908d2cff98ce9588aff6f985b2b33ed5ec2da3503eefdcce
font_01_sfnt_off00008c76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C76 18620 bytes
SHA-256: 40c475c53aff331210a9a2d0b75aea6a35c2112271575a9f9d5a0db1381ffa81

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