Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e32fc1c7f3a2e4e…

MALICIOUS

PDF

35.9 KB Created: 2021-05-22 09:19:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 29161813640d1e9888e86c2a3298dcd3 SHA-1: 8095ee59bbf8fb9821eef28b2ceb0d7493146d26 SHA-256: 1e32fc1c7f3a2e4ea3df3314f8311928102b9c2135c7a1c8733d036be0c1221b
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document employs a fake CAPTCHA and a 'Click Here to Download' lure to deceive users into interacting with a malicious link. This link, https://netcdn.xyz/app/835599320/free-views-tiktok-game-hack, redirects to a site offering game hacks, a common social engineering tactic. The ML classifier also flagged this PDF as malicious, supporting the observed malicious behavior.

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/835599320/free-views-tiktok-game-hack PDF link annotation
    • https://bdhcpa.com/images/roblox-com-free-play_GM431946152.pdfIn PDF document text
    • https://bdhcpa.com/images/coin-master-hack-generator_GM406889139.pdfIn PDF document text
    • https://bdhcpa.com/images/rbxoffer-com-free-robux_GM431946152.pdfIn PDF document text
    • https://bdhcpa.com/images/free-roblox-money_GM431946152.pdfIn PDF document text
    • https://bdhcpa.com/images/how-to-get-free-robux-on-mobile_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
stream_002_off00002f46.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2F46 27476 bytes
SHA-256: 5c708025fcd37b5b22fec04d85f21092373184c65c8dc78dc74b08afb1351656
font_01_sfnt_off00006c5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C5E 17752 bytes
SHA-256: ce4f969b492885a6292b68f2810015e61170a5a05df2656d5db0dd0870788c0b

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