Malicious PDF — malware analysis report

Static analysis result for SHA-256 a62f48ec2125e0e3…

MALICIOUS

PDF

42.2 KB Created: 2021-05-19 22:05:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 590f9c46d2e262cc13e7ee5c9c2019c5 SHA-1: e742d61b1011eb7d9124da4cdc509c8252dfb020 SHA-256: a62f48ec2125e0e30845747b8a09fc2a8d0b8b896e81c82fc2c74805cd3bca1e
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, disguised as 'free generator' or 'game hack' lures. The document body and embedded links suggest a phishing or scam attempt to trick users into visiting potentially harmful websites. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/free-pet-snacks-coin-master-game-hack In PDF document text
    • https://creationegyptco.com/userfiles/files/minecraft-coins-free_GM479516143.pdfIn PDF document text
    • https://creationegyptco.com/userfiles/files/free-robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • https://creationegyptco.com/userfiles/files/pokeballs-pokemon-go-free_GM1094591345.pdfIn PDF document text
    • https://creationegyptco.com/userfiles/files/bux-gg-robux-free_GM431946152.pdfIn PDF document text
    • https://creationegyptco.com/userfiles/files/coin-master-hack-without-human-verification-2021_GM406889139.pdfIn PDF document text
    • https://creationegyptco.com/userfiles/files/free-robux-codes-no-verification_GM431946152.pdfIn PDF document text
    • https://creationegyptco.com/userfiles/files/hack-coin-master-site-rssingcom_GM406889139.pdfIn PDF document text
    • https://creationegyptco.com/userfiles/files/free-robux-master_GM431946152.pdfIn PDF document text
    • https://creationegyptco.com/userfiles/files/free-robux-real-2021_GM431946152.pdfIn PDF document text
    • https://creationegyptco.com/userfiles/files/coin-master-hack-version-download_GM406889139.pdfIn PDF document text
    • https://creationegyptco.com/userfiles/files/real-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://creationegyptco.com/userfiles/files/pubg-uc-with-easypaisa_GM1330123889.pdfIn PDF document text
    • https://creationegyptco.com/userfiles/files/minecraft-for-laptop-free_GM479516143.pdfIn PDF document text
    • https://creationegyptco.com/userfiles/files/free-robux-stream_GM431946152.pdfIn PDF document text
    • https://creationegyptco.com/userfiles/files/coin-master-fan-page-free-spins_GM406889139.pdfIn PDF document text
    • https://creationegyptco.com/userfiles/files/free-minecraft-for-kids_GM479516143.pdfIn PDF document text
    • https://creationegyptco.com/userfiles/files/free-robux-app-real_GM431946152.pdfIn PDF document text
    • https://creationegyptco.com/userfiles/files/free-game-pack-with-google-play-coin-master_GM406889139.pdfIn PDF document text
    • https://creationegyptco.com/userfiles/files/coin-master-apk-hack-35-8_GM406889139.pdfIn PDF document text
    • https://creationegyptco.com/userfiles/files/minecraft-hax-download-no-virus_GM479516143.pdfIn 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_off00004c20.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C20 24520 bytes
SHA-256: b3e2f0c6b293acca6946d23048a7384e6020063aa777818b51511b1af4e770c0
font_01_sfnt_off0000838f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x838F 18036 bytes
SHA-256: 3d327bea3e4f4686d207e4a384a0321529a6c28b7060626e1d07ba8c13b7991e

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