Malicious PDF — malware analysis report

Static analysis result for SHA-256 c405adece6b3317e…

MALICIOUS

PDF

34.7 KB Created: 2021-06-22 23:59:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: ad807b6d0c5d223c0c5ccaa1a86fa4bc SHA-1: 40606f37db0d2323a2b99e336a6ed28e1f969e0c SHA-256: c405adece6b3317e55a22a7db2c295788feab9acb750642acd60fbf666d30ad6
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting game hacks and generators. The heuristic firings indicate that the PDF links to a known malicious redirector and is flagged by an ML classifier. The document body and embedded URLs reinforce the lure of obtaining free in-game currency or hacks, which is a common social engineering tactic to drive traffic to malicious sites.

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 http://netcdn.co/app/431946152/hack-weight-lifting-simulator-2-roblox-game-hack In PDF document text
    • https://financia-business-school.com/static/upload/files/coin-master-free-spins-hack-without-human-verification_GM406889139.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/hack-coin-master-343-apk_GM406889139.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/coin-master-hack-review_GM406889139.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/roblox-script-executor-free_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/free-spins-link-in-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/free-coin-master-hacks-no-verification-or-survey_GM406889139.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/how-to-get-free-robux-for-roblox-pc_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/free-robux-websites-that-work_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/admin-hack-roblox-download_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/how-to-get-free-pets-in-adopt-me-roblox_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/roblox-lovenet_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/roblox-hack-apk_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/roblox-vip-shirts-for-free_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/robux-free-gift-card-org-hack_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/rbx-land-free-robux_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/how-to-get-minecraft-for-free-on-nintendo-switch_GM479516143.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/minecraft-com-free_GM479516143.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/how-to-win-free-robux_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/free-coin-master-app_GM406889139.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/codigo-hack-para-robux-inspeccionar_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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002fa3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FA3 22060 bytes
SHA-256: 0d70cc466d761521f8f5e1b247c0282ab2d80c78177e06cb6ac0a4aff9459268
font_01_sfnt_off00006090.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6090 19768 bytes
SHA-256: f1e48f2b60677fb1c1763b020bf7b57eafd86f6bd0ad9db39359698fc9f14886

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