Malicious PDF — malware analysis report

Static analysis result for SHA-256 58e528b283744427…

MALICIOUS

PDF

42.6 KB Created: 2021-05-16 09:04:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 6894c11751e879c21866c5f52a762a3c SHA-1: 182e39ed877efb854e0ec549915dc91c8b89a367 SHA-256: 58e528b283744427ae9b783fc5c532e60e59ae0ece9cc59314c5ac7ba9f52031
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link

This PDF document was flagged as malicious by an ML classifier. It uses a QR-code 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 0.9971

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.
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • 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/479516143/free-private-minecraft-server-game-hack PDF link annotation
    • https://socialvalue.gr/images/rbx-sites_GM431946152.pdfIn PDF document text
    • https://socialvalue.gr/images/free-spins-generated-from-coin-master_GM406889139.pdfIn PDF document text
    • https://socialvalue.gr/images/free-coins-and-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://socialvalue.gr/images/coinmaster-hack_GM406889139.pdfIn PDF document text
    • https://socialvalue.gr/images/minecraft-free-ios-2021_GM479516143.pdfIn PDF document text
    • https://socialvalue.gr/images/coin-master-daily-free-spin-and-coin-link-haktuts_GM406889139.pdfIn PDF document text
    • https://socialvalue.gr/images/blox-supply-free-robux_GM431946152.pdfIn PDF document text
    • https://socialvalue.gr/images/coin-master-daily-free-spins-blog_GM406889139.pdfIn PDF document text
    • https://socialvalue.gr/images/how-to-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://socialvalue.gr/images/coin-master-hack-android-no-root_GM406889139.pdfIn PDF document text
    • https://socialvalue.gr/images/fake-robux-codes_GM431946152.pdfIn PDF document text
    • https://socialvalue.gr/images/free-coin-and-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • https://socialvalue.gr/images/lazyblox-com-free-robux_GM431946152.pdfIn PDF document text
    • https://socialvalue.gr/images/free-robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • https://socialvalue.gr/images/free-realistic-minecraft-texture-packs_GM479516143.pdfIn PDF document text
    • https://socialvalue.gr/images/free-robux-come_GM431946152.pdfIn PDF document text
    • https://socialvalue.gr/images/coin-master-free-link-app_GM406889139.pdfIn PDF document text
    • https://socialvalue.gr/images/minecraft-esp_GM479516143.pdfIn PDF document text
    • https://socialvalue.gr/images/coin-master-daily-gifts_GM406889139.pdfIn PDF document text
    • https://socialvalue.gr/images/coin-master-free-coins-link-2021-today_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
stream_003_off00004c2f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C2F 25352 bytes
SHA-256: a84cb8d37990649c89e075f33831deeceeef9f5f1702318d4c1ecb4434c04653
font_01_sfnt_off00008586.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8586 17836 bytes
SHA-256: 7ff77ee3a78605da9ef85fec4605ea670974ab48e4ca839a7389016eb6bc2a09

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