Malicious PDF — malware analysis report

Static analysis result for SHA-256 265748d7b1a18ff5…

MALICIOUS

PDF

44.8 KB Created: 2021-05-10 13:14:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-23
MD5: ac3fc6f3c212862a16da22ebdfcc69e0 SHA-1: e2113190e25a34790c9abb6ccd3b59aa06d5eeba SHA-256: 265748d7b1a18ff588f3c93dd516c6130a25a965404d23ba200eb851ae85a159
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links that redirect to known malicious infrastructure, specifically promoting 'game hacks'. The document body and heuristics indicate a lure for free game currency or cheats, which is a common social engineering tactic. While no scripts were directly extracted, the PDF structure itself facilitates the redirection, likely to a site that hosts further malicious content or exploits.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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/coin-master-mod-apk-hack-game-hack In PDF document text
    • http://library.yamasi.ac.id//repository/free-roblox-boy-hair_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/earn-robux-online_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/reddit-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/block-best-robux_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/free-spin-coin-master-game_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/free-robux-hacks-no-verification_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/legit-coin-master-hack-site-zyngaplayerforumscom_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/how-to-get-minecraft-java-free_GM479516143.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/www-free-robux_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/how-to-get-2021-robux-for-free_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/minecraft-bedrock-download-pc-free_GM479516143.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/coin-master-free-spins-cheat-deutsch_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/instant-robux_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/how-to-get-free-minecraft-alts_GM479516143.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/how-do-you-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/coin-master-ios-hack-download_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/coin-master-hack-no-download_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/coin-master-free-coins-and-spins-link_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/coin-master-links-to-get-free-spins_GM406889139.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_off00004a2b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A2B 30848 bytes
SHA-256: 933bdb4c207eff694aefbf45ce46b49a43e472dcf1ca59739f88e16d54e35be2
font_01_sfnt_off00008d92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D92 18068 bytes
SHA-256: 8ae8c61480b2d7dd12f5832ca7c197da3ab489a4591de89b541cb0d7cf37360a

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