Malicious PDF — malware analysis report

Static analysis result for SHA-256 1206a4e37971f20d…

MALICIOUS

PDF

35.5 KB Created: 2021-06-20 01:01:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20
MD5: d7643f54e8416bee0df5a9baef9c01e0 SHA-1: 570ad78c1e9ab0c33c2c7667cb0c6a645b586aa8 SHA-256: 1206a4e37971f20d43b065b51ab01e57ceb4c8c8776f0f48d2105abc5958d1c0
180 Risk Score

Malware Insights

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

This PDF document employs a lure related to free Robux and game hacks to entice users to click on embedded links. The links redirect to known malicious infrastructure, indicating a phishing or scam attempt. The ML classifier strongly supports the malicious nature of this PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9981

Heuristics 5

  • 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.
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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/free-robux-survey-2021-game-hack In PDF document text
    • http://111.68.26.74/widyapustaka/repository/how-to-get-free-robux-in-2-minutes-roblox_GM431946152.pdfPDF link annotation
    • http://111.68.26.74/widyapustaka/repository/free-robux-no-apps_GM431946152.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/free-minecraft-printables_GM479516143.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/how-to-hack-roblox-cheat-engine-64_GM431946152.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/wurst_GM479516143.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/best-minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/free-robux-daily-rewards_GM431946152.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/how-to-hack-roblox-free-robux-and-tix-2021_GM431946152.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/static-moonactive_GM406889139.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/robux-gift-card-free_GM431946152.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/free-robux-console-pastebin-2021_GM431946152.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/all-coin-master-spin-link-and-free-download_GM406889139.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/popular-websites-to-get-virus-free-roblox-explots_GM431946152.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/is-there-any-tricks-or-working-hacks-for-coin-master_GM406889139.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/coin-master-apk_GM406889139.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/free-spin-link-coin-master_GM406889139.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/coin-master-heaven-links_GM406889139.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/free-robux-stream-roblox_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000031ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31CE 22516 bytes
SHA-256: 09bf099338016248e2eb0633e9f42aa0d9deb01e8cee87dc3e265a0259bf0780
font_01_sfnt_off00006468.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6468 19412 bytes
SHA-256: 4f58f046a18130a738cb509b1c41d161377c0a0bec83ce4161e2718101b527b5

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