Malicious PDF — malware analysis report

Static analysis result for SHA-256 a34879e84e9fbf0e…

MALICIOUS

PDF

42.5 KB Created: 2021-05-12 14:00:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 5ef2226ad7360864cc4780c4a7503762 SHA-1: bf2e74d4fe264f39b2c51fa71833b3b218a81635 SHA-256: a34879e84e9fbf0ecad0983e0b7f5846cab510d30ce9091be61ebff2e296300a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links that redirect to malicious infrastructure, specifically promoting 'game hacks' and 'free generators' for popular games. The document body, though heavily obfuscated, contains references to these lures and embedded URLs. The primary malicious activity observed is the redirection to potentially harmful content, likely a phishing or malware distribution site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 4

  • 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.
  • 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/479516143/hacked-client-for-minecraft-bedrock-game-hack In PDF document text
    • http://learningarabic.co.uk/images/roblox-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://learningarabic.co.uk/images/is-java-minecraft-free_GM479516143.pdfIn PDF document text
    • http://learningarabic.co.uk/images/free-robux-generator-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://learningarabic.co.uk/images/coin-master-hack-apk-april-12-2021_GM406889139.pdfIn PDF document text
    • http://learningarabic.co.uk/images/roblox-money-hack_GM431946152.pdfIn PDF document text
    • http://learningarabic.co.uk/images/get-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://learningarabic.co.uk/images/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://learningarabic.co.uk/images/free-robux-codes-no-verification_GM431946152.pdfIn PDF document text
    • http://learningarabic.co.uk/images/40-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://learningarabic.co.uk/images/coin-master-game-hunter_GM406889139.pdfIn PDF document text
    • http://learningarabic.co.uk/images/hack-coin-master-ios_GM406889139.pdfIn PDF document text
    • http://learningarabic.co.uk/images/coin-master-daily-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • http://learningarabic.co.uk/images/coin-master-free-spins-link-download_GM406889139.pdfIn PDF document text
    • http://learningarabic.co.uk/images/coin-master-free-cards-2021_GM406889139.pdfIn PDF document text
    • http://learningarabic.co.uk/images/how-do-you-hack-minecraft_GM479516143.pdfIn PDF document text
    • http://learningarabic.co.uk/images/free-robux-for-kids-no-verification_GM431946152.pdfIn PDF document text
    • http://learningarabic.co.uk/images/coin-master-email-free-spins_GM406889139.pdfIn PDF document text
    • http://learningarabic.co.uk/images/roblox-hacked-version_GM431946152.pdfIn PDF document text
    • http://learningarabic.co.uk/images/free-robux-on-iphone_GM431946152.pdfIn PDF document text
    • http://learningarabic.co.uk/images/coin-master-free-spins-daily-link-updated_GM406889139.pdfIn PDF document text
    • https://youtuIn 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_off00004a65.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A65 24928 bytes
SHA-256: d5389b55b26ed6bbadc42c35d50078e7dc0497270a089869ba011e0e95d2d331
font_01_sfnt_off0000838d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x838D 18344 bytes
SHA-256: b450419ed0caa9533e558d664a7e2ff52fef1aac842a5808c0deaab1d85c69fe

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