Malicious PDF — malware analysis report

Static analysis result for SHA-256 368bbe0244317504…

MALICIOUS

PDF

41.6 KB Created: 2021-05-20 01:03:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: cdffba6a3465fe2bbd225d4c4e06741e SHA-1: 5d41e75a67a3a4223af3b17ae108da0330245345 SHA-256: 368bbe02443175049503e2083d8fd97912389f0b0755a95ec456d7df3b1a3ace
180 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting a 'free Robux generator' lure. The heuristic firings indicate that the document is designed to trick users into visiting these malicious sites, likely as part of a phishing or scam campaign. No scripts were extracted, but the embedded URLs and redirector links are the primary indicators of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 5

  • 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.
  • 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) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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/get-free-robux-generator-game-hack In PDF document text
    • http://www.occquimica.com.br/images/coinmasterfreespins_GM406889139.pdfIn PDF document text
    • http://www.occquimica.com.br/images/coin-master-daily-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://www.occquimica.com.br/images/coin-master-hack-spins_GM406889139.pdfIn PDF document text
    • http://www.occquimica.com.br/images/can-u-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.occquimica.com.br/images/static-moonactive_GM406889139.pdfIn PDF document text
    • http://www.occquimica.com.br/images/free-robux-without-verification_GM431946152.pdfIn PDF document text
    • http://www.occquimica.com.br/images/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://www.occquimica.com.br/images/minecraft-download-free-download_GM479516143.pdfIn PDF document text
    • http://www.occquimica.com.br/images/install-free-game-coin-master_GM406889139.pdfIn PDF document text
    • http://www.occquimica.com.br/images/easy-points-gg_GM431946152.pdfIn PDF document text
    • http://www.occquimica.com.br/images/coin-master-daily-free-spins-link-facebook_GM406889139.pdfIn PDF document text
    • http://www.occquimica.com.br/images/coin-master-2021-free-spins_GM406889139.pdfIn PDF document text
    • http://www.occquimica.com.br/images/master-free-spin-and-coin-links-html-m-1_GM406889139.pdfIn PDF document text
    • http://www.occquimica.com.br/images/microsoft-rewards-roblox_GM431946152.pdfIn PDF document text
    • http://www.occquimica.com.br/images/free-roblox-accounts-with-robux-2021_GM431946152.pdfIn PDF document text
    • http://www.occquimica.com.br/images/how-to-download-minecraft-for-free-on-iphone_GM479516143.pdfIn PDF document text
    • http://www.occquimica.com.br/images/free-robux-with-no-verification_GM431946152.pdfIn PDF document text
    • http://www.occquimica.com.br/images/websites-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.occquimica.com.br/images/blogspot-coin-master_GM406889139.pdfIn PDF document text
    • http://www.occquimica.com.br/images/hack-coin-master-net_GM406889139.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_off00004829.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4829 24912 bytes
SHA-256: 7998af6b78d9227cce174e7dc2fad76423def2c74d46f75297bc5d8235b22a3f
font_01_sfnt_off00007fc2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FC2 18344 bytes
SHA-256: 3242c4573a8204327cdf084b118e3b23cfd789fa9551ab2d205e53ac9add3c4b

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