Malicious PDF — malware analysis report

Static analysis result for SHA-256 dee5af8f28502630…

MALICIOUS

PDF

36.4 KB Created: 2021-05-23 14:38:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 7e8dcc942e953187dedf3a6b3dfac6c1 SHA-1: dcd4d26e2b1b516d9cd3d70506e961833b443908 SHA-256: dee5af8f2850263019ed98594c4b0d89f843075e47ee6313af756c1794a7b5cd
142 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by an ML classifier. It uses a seed-phrase/secret-recovery 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

  • Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE
    Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
  • 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.
  • 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/406889139/coin-master-daily-free-spins-blogspot-game-hack PDF link annotation
    • http://www.dolciariavarone.com/images/inappropriate-roblox-games-2021_GM431946152.pdfIn PDF document text
    • http://www.dolciariavarone.com/images/minecraft-apk-download-v1-144-2-free_GM479516143.pdfIn PDF document text
    • http://www.dolciariavarone.com/images/minecraft-account-hacked_GM479516143.pdfIn PDF document text
    • http://www.dolciariavarone.com/images/how-to-hack-roblox-to-get-robux_GM431946152.pdfIn PDF document text
    • http://www.dolciariavarone.com/images/rbxoffers-earn-free-robux_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_off000034de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x34DE 23972 bytes
SHA-256: 3ffef291db5eb886cc7c235a15fb51d7b29535b360356b85806bc479dd28f543
font_01_sfnt_off00006b5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B5F 18812 bytes
SHA-256: 99efaab321cd8bd4771148dad361c5d136942e4fae15d22f58752892cb19a04e

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