Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a96319e1540e55a…

MALICIOUS

PDF

40.5 KB Created: 2021-05-20 06:30:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 26563073d85574e2419a9d712fef1810 SHA-1: 0ed4910a3772c93922fdf26e6d4200505496258e SHA-256: 8a96319e1540e55ae7702bd047cf0945eed7c369d759cfc3119b65cf23c55361
240 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link

This PDF document employs social engineering tactics, impersonating Microsoft to lure users into clicking a link for game hacks or free spins. The link redirects to malicious infrastructure, indicating a phishing or malware distribution attempt. The document's structure and embedded links suggest it's designed to trick users into executing further malicious actions, potentially involving JavaScript execution or downloading secondary payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9988

Heuristics 6

  • 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.
  • ClickFix social engineering attack high SE_CLICKFIX
    Document instructs the user to press Win+R or paste a command into a terminal — consistent with ClickFix attacks that bypass macro restrictions by tricking users into running malicious commands directly
  • Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: https://netcdn.xyz/app/479516143/minecraft-pe-hacked-client-download-game-hack.
  • 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/479516143/minecraft-pe-hacked-client-download-game-hack In PDF document text
    • http://samavetpharm.com/userfiles/files/_GM479516143.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/coin-master-heaven-free-spins-today_GM406889139.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/how-to-hack-peoples-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/free-spin-link-of-coin-master_GM406889139.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/coin-master-hack-2021-download_GM406889139.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/coin-master-stop-attack-hack_GM406889139.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/free-roblox-hack-us_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/coin-master-fan-club_GM406889139.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/free-robux-net_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/free-spins-coin-master-links_GM406889139.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/free-spins-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/coin-master-free-spins-link-no-verification-code_GM406889139.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/minecraft-windows-10-edition-hacks_GM479516143.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/minecraft-survival-hacks_GM479516143.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/free-tiktok-that-you-dont-have-to-download_GM835599320.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/coin-master-tiradas-gratis-link_GM406889139.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/coin-master-free-spins-hack-iphone_GM406889139.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/how-do-you-get-free-robux-without-doing-anything_GM431946152.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_002_off00004359.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4359 24984 bytes
SHA-256: 1d8dea7d11c1c350d0fc1b11644f59a64f2980b555dc9ffec288101170a84926
font_01_sfnt_off00007b79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B79 18616 bytes
SHA-256: ebc8f63742d735bd0d5fcc01e6dc1173a6a34174957216cae8456d8712615b4b

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