Malicious PDF — malware analysis report

Static analysis result for SHA-256 b5941e89901dc109…

MALICIOUS

PDF

44.5 KB Created: 2021-05-10 23:10:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21
MD5: a4c72f88beb0d24e5dc6c84d4bffcfa3 SHA-1: 3ce9c02a0c4db3de0970fa4497dbc25d6c05291d SHA-256: b5941e89901dc10940abb03840c51306b3ad8c7a2951b36892ed0361234a710a
288 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a common lure of free game hacks and generators to trick users into clicking malicious links. It contains numerous links to external PDF files, many of which are likely part of a link farm designed for SEO manipulation and redirecting users to potentially harmful content. The primary redirector URL is https://netcdn.xyz/app/431946152/roblox-avatar-free-game-hack, which is flagged as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9632

Heuristics 8

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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/431946152/roblox-avatar-free-game-hack In PDF document text
    • http://nouveaupavillon.fr/images/coin-master-free-cards-hack_GM406889139.pdfIn PDF document text
    • http://nouveaupavillon.fr/images/coin-master-game-2021-free-spin-link_GM406889139.pdfIn PDF document text
    • http://nouveaupavillon.fr/images/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://nouveaupavillon.fr/images/are-robux-generators-safe_GM431946152.pdfIn PDF document text
    • http://nouveaupavillon.fr/images/how-to-hack-in-roblox-prison-life_GM431946152.pdfIn PDF document text
    • http://nouveaupavillon.fr/images/coin-master-free-spin-bonus_GM406889139.pdfIn PDF document text
    • http://nouveaupavillon.fr/images/coin-master-hacks-for-pet-food_GM406889139.pdfIn PDF document text
    • http://nouveaupavillon.fr/images/roblox-play-now-for-free_GM431946152.pdfIn PDF document text
    • http://nouveaupavillon.fr/images/coin-master-spin-hack_GM406889139.pdfIn PDF document text
    • http://nouveaupavillon.fr/images/coin-master-free-spins-link-download_GM406889139.pdfIn PDF document text
    • http://nouveaupavillon.fr/images/free-robux-android_GM431946152.pdfIn PDF document text
    • http://nouveaupavillon.fr/images/free-robux-please_GM431946152.pdfIn PDF document text
    • http://nouveaupavillon.fr/images/free-coin-master-game_GM406889139.pdfIn PDF document text
    • http://nouveaupavillon.fr/images/bloxawards-com-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://nouveaupavillon.fr/images/roblox-speed-hack_GM431946152.pdfIn PDF document text
    • http://nouveaupavillon.fr/images/coin-master-hack-version-2021-free-download_GM406889139.pdfIn PDF document text
    • http://nouveaupavillon.fr/images/www-free-robux_GM431946152.pdfIn PDF document text
    • http://nouveaupavillon.fr/images/free-robux-site_GM431946152.pdfIn PDF document text
    • http://nouveaupavillon.fr/images/coin-master-free-spins-uk_GM406889139.pdfIn PDF document text
    • http://nouveaupavillon.fr/images/coin-master-game-hacking-tricks_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000043f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x43F8 26888 bytes
SHA-256: e58bb996c4a75eb90448a6df6ac114e80ea28cacccc1044ef845f68fdd953651
font_01_sfnt_off000080e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80E2 2880 bytes
SHA-256: 106de1d187d148d03f5c34a802444a7e62d93662ddf359d17cd55770c6c16081
font_02_sfnt_off00008ad3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AD3 18396 bytes
SHA-256: fabbc4d33b4fd44a10480a095a1b5872a696080c7c42ded8a290903470f97fc4

Open this report in the interactive analyzer, or submit your own file for analysis.