Malicious PDF — malware analysis report

Static analysis result for SHA-256 18e7588747ac344e…

MALICIOUS

PDF

45.6 KB Created: 2021-05-17 07:53:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 327d356bce62422930e1b1874b913b7c SHA-1: 12da8e16b41005a7b15e740ee22d42ed1e22142b SHA-256: 18e7588747ac344eee498c331be79ba73b0c8284b2eaa6735b3de52094a5a988
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors and game hack lures, indicating a phishing or scam attempt. The primary malicious URL identified is https://netcdn.xyz/app/406889139/coin-master-daily-free-spins-link-today-facebook-game-hack. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest a malicious intent to redirect users to potentially harmful content, likely as part of a phishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9507

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-daily-free-spins-link-today-facebook-game-hack In PDF document text
    • http://sbm-nn.ru/images/roblox-hack-me_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/how-to-get-free-robux-without-doing-anything-2021_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/coin-master-free-spins-hack-without-human-verification_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/minecraft-pvp-hacks_GM479516143.pdfIn PDF document text
    • http://sbm-nn.ru/images/rbx-com_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/how-to-get-free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/free-robux-link_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/roblox-free-robux-website_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/ways-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/free-robux-gift-card_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/coin-master-free-spins-link-today-instagram_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/coin-master-hack-spins-app_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/how-to-get-free-minecoins-in-minecraft_GM479516143.pdfIn PDF document text
    • http://sbm-nn.ru/images/robux-com-free_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/how-to-get-free-spins-and-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/free-free-robux_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/robux-in_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/roblox-cheat-robux_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/free-coin-coin-master_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/free-roblox-website_GM431946152.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000047ae.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x47AE 25056 bytes
SHA-256: f793e7901267a75452998d44dc1c0ed89a7f0d8a2ab8845c0d5c5aa6d87c5821
font_01_sfnt_off00008186.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8186 3560 bytes
SHA-256: c953d730e49f69c7d62e02a926729ae4a31de13d9a976dc4a95b39cf47066c93
font_02_sfnt_off00008e0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E0C 18808 bytes
SHA-256: 4857649f58737dfd5d3cde565af8420aeb724b61b1648601542f846ee8275f41

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