Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea7b9181038445ed…

MALICIOUS

PDF

41.5 KB Created: 2021-05-17 06:43:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 322f7bac94bb59bd494683ed7c85f459 SHA-1: 59ee64bcdc35170a85d9fe1a8ff716bf19743e55 SHA-256: ea7b9181038445ed6c13a5a170f049a26240e62581ed94fbb52e6e22636db548
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirectors and infrastructure, disguised as offers for free game items and hacks. The primary malicious link identified is https://netcdn.xyz/app/431946152/cute-free-roblox-outfits-game-hack. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a phishing or redirection attack, likely initiated via a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/431946152/cute-free-roblox-outfits-game-hack In PDF document text
    • http://modlingua.com/images/master-coin-free_GM406889139.pdfIn PDF document text
    • http://modlingua.com/images/free-robux-link_GM431946152.pdfIn PDF document text
    • http://modlingua.com/images/coin-master-freebies-2021_GM406889139.pdfIn PDF document text
    • http://modlingua.com/images/coin-master-free-spins-facebook_GM406889139.pdfIn PDF document text
    • http://modlingua.com/images/how-to-get-free-robux-without-email_GM431946152.pdfIn PDF document text
    • http://modlingua.com/images/free-robux-no-verification-required_GM431946152.pdfIn PDF document text
    • http://modlingua.com/images/free-spins-and-coins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://modlingua.com/images/official-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://modlingua.com/images/free-robux-mobile_GM431946152.pdfIn PDF document text
    • http://modlingua.com/images/reddit-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://modlingua.com/images/coin-master-free-cards-link-2021_GM406889139.pdfIn PDF document text
    • http://modlingua.com/images/coin-master-hack-no-download_GM406889139.pdfIn PDF document text
    • http://modlingua.com/images/is-there-a-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://modlingua.com/images/coin-master-free_GM406889139.pdfIn PDF document text
    • http://modlingua.com/images/roblox-hack-app_GM431946152.pdfIn PDF document text
    • http://modlingua.com/images/free-spin-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://modlingua.com/images/coin-master-free-spins-no-human-verification_GM406889139.pdfIn PDF document text
    • http://modlingua.com/images/legit-coin-master-hack-october-2021_GM406889139.pdfIn PDF document text
    • http://modlingua.com/images/legit-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://modlingua.com/images/minecraft-free-minecoins_GM479516143.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_off00004740.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4740 24720 bytes
SHA-256: 94af27d6ed303520d804870b05eb75d961e3d6dadcdb722005a3e10e5378e4c9
font_01_sfnt_off00007f9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F9C 18312 bytes
SHA-256: 2199fd6d62bdff63a90b18f1783fe44650e4aecd573f3309c05a38fa35b4e6eb

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