Malicious PDF — malware analysis report

Static analysis result for SHA-256 032324c410c4ee1e…

MALICIOUS

PDF

36.3 KB Created: 2021-05-21 18:49:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: dc8848226df69e9f0f18635ce5d5e64e SHA-1: 20f5f85cc890abe5849e725c861a971ebcec2141 SHA-256: 032324c410c4ee1e34b637278be32dec217ced81082e480cf19192fe66c4978d
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. It uses a fake-CAPTCHA lure. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9492

Heuristics 5

  • PDF links to a 'free generator / game hack' redirector high 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.
  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/free-roblox-premium-game-hack PDF link annotation
    • https://www.arquetopia.org/images/coin-master-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • https://www.arquetopia.org/images/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://www.arquetopia.org/images/free-robux-no-verification_GM431946152.pdfIn PDF document text
    • https://www.arquetopia.org/images/free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.arquetopia.org/images/how-do-you-get-free-robux-on-roblox_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_off00003371.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3371 24772 bytes
SHA-256: 31ed96ae0d4daecb0f22259dd86442b5108bee3c5af19efa9a2d256fc95ddf85
font_01_sfnt_off00006bf3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BF3 18620 bytes
SHA-256: 6b551930cef55f40e6eb23df153e490346d16ddb025fe33a98e4996eaf4f5114

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