Malicious PDF — malware analysis report

Static analysis result for SHA-256 808397c4f17cd6a0…

MALICIOUS

PDF

34.8 KB Created: 2021-06-21 23:47:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 06ace53d4955f1a58d35136b87f04b57 SHA-1: 72fd85645417c27a70c0f594e4098694ff632058 SHA-256: 808397c4f17cd6a026bac55e6f734433dc364205481f17f8ef2c007e24a7e024
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one identified as a malicious redirector, which is designed to lure users into clicking on game hack or free generator content. The primary malicious URL identified is http://netcdn.co/app/431946152/how-to-get-a-free-dominus-in-roblox-2021-march-game-hack. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the lure suggest a phishing or social engineering attempt to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/how-to-get-a-free-dominus-in-roblox-2021-march-game-hack In PDF document text
    • https://www.alamac-kitbag.co.uk/uploads/files/files/can-i-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://www.alamac-kitbag.co.uk/uploads/files/files/how-to-get-free-spins-on-coin-master-without-waiting_GM406889139.pdfIn PDF document text
    • https://www.alamac-kitbag.co.uk/uploads/files/files/roblox-free-robux-slows-down-towards-100_GM431946152.pdfIn PDF document text
    • https://www.alamac-kitbag.co.uk/uploads/files/files/get-free-food-in-coin-master_GM406889139.pdfIn PDF document text
    • https://www.alamac-kitbag.co.uk/uploads/files/files/roblox-tycoon-hack-2021_GM431946152.pdfIn PDF document text
    • https://www.alamac-kitbag.co.uk/uploads/files/files/pagina-hacker-de-roblox_GM431946152.pdfIn PDF document text
    • https://www.alamac-kitbag.co.uk/uploads/files/files/coin-master-free-items_GM406889139.pdfIn PDF document text
    • https://www.alamac-kitbag.co.uk/uploads/files/files/roblox-skins-boy-free_GM431946152.pdfIn PDF document text
    • https://www.alamac-kitbag.co.uk/uploads/files/files/roblox-dominus-free_GM431946152.pdfIn PDF document text
    • https://www.alamac-kitbag.co.uk/uploads/files/files/minecraft-112-2-hacked-client_GM479516143.pdfIn PDF document text
    • https://www.alamac-kitbag.co.uk/uploads/files/files/roblox-how-to-make-animations-free_GM431946152.pdfIn PDF document text
    • https://www.alamac-kitbag.co.uk/uploads/files/files/how-to-get-roblox-money_GM431946152.pdfIn PDF document text
    • https://www.alamac-kitbag.co.uk/uploads/files/files/free-builders-culb-roblox-trial_GM431946152.pdfIn PDF document text
    • https://www.alamac-kitbag.co.uk/uploads/files/files/how-to-get-free-gold-cards-on-coin-master_GM406889139.pdfIn PDF document text
    • https://www.alamac-kitbag.co.uk/uploads/files/files/robux-free-co_GM431946152.pdfIn PDF document text
    • https://www.alamac-kitbag.co.uk/uploads/files/files/roblox-cracked-cheat-engine_GM431946152.pdfIn PDF document text
    • https://www.alamac-kitbag.co.uk/uploads/files/files/coin-master-daily-spin-free_GM406889139.pdfIn PDF document text
    • https://www.alamac-kitbag.co.uk/uploads/files/files/minecraft-apk-free-download-016-0_GM479516143.pdfIn PDF document text
    • https://www.alamac-kitbag.co.uk/uploads/files/files/flip-master-free-coins_GM406889139.pdfIn PDF document text
    • https://www.alamac-kitbag.co.uk/uploads/files/files/free-script-executor-roblox-2021_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_off00002f1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F1C 21912 bytes
SHA-256: 3abfa9cd8e3856d5516b211a167341a3b20fbb0dea6402e0eda75dd8637e7811
font_01_sfnt_off00005f37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F37 20368 bytes
SHA-256: 72ebdb9c6bb41065ae3355f9d46b5599aaa154c5f9f3c3f7991301373b5d7095

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