Malicious PDF — malware analysis report

Static analysis result for SHA-256 86d62dd6a3403217…

MALICIOUS

PDF

23.2 KB Created: 2021-05-15 04:36:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 35b5e26360d8dff162273513be11c072 SHA-1: a198bb1167fb99fd3828d911a99fde721dbc57d7 SHA-256: 86d62dd6a34032172b5b480758a30acab5cecf114b87d10275ef1e038468a13c
212 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, including one identified as a malicious redirector for a 'game hack' lure. The document body and extracted links suggest a social engineering attempt to trick users into visiting potentially harmful websites. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a phishing or scam campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/431946152/how-to-get-free-clothes-on-roblox-game-hack In PDF document text
    • https://www.clinicalsim.com/uploaded_files/userfiles/files/coin-master-free-spins-link-2021-no-verification-deutsch_GM406889139.pdfIn PDF document text
    • https://www.clinicalsim.com/uploaded_files/userfiles/files/coin-master-daily-gift-free-spins-and-coins-link_GM406889139.pdfIn PDF document text
    • https://www.clinicalsim.com/uploaded_files/userfiles/files/free-account-roblox-with-robux_GM431946152.pdfIn PDF document text
    • https://www.clinicalsim.com/uploaded_files/userfiles/files/coin-master-free-spin-and-coins-links-2021_GM406889139.pdfIn PDF document text
    • https://www.clinicalsim.com/uploaded_files/userfiles/files/coin-master-free-account_GM406889139.pdfIn PDF document text
    • https://www.clinicalsim.com/uploaded_files/userfiles/files/free-robux-no-verification-2021-android_GM431946152.pdfIn PDF document text
    • https://www.clinicalsim.com/uploaded_files/userfiles/files/hack-coin-master-with-lucky-patcher_GM406889139.pdfIn PDF document text
    • https://www.clinicalsim.com/uploaded_files/userfiles/files/add-robux_GM431946152.pdfIn PDF document text
    • https://www.clinicalsim.com/uploaded_files/userfiles/files/hack-coin-master-iphone_GM406889139.pdfIn PDF document text
    • https://www.clinicalsim.com/uploaded_files/userfiles/files/free-roblox-clothes-2021_GM431946152.pdfIn PDF document text
    • https://www.clinicalsim.com/uploaded_files/userfiles/files/daily-coin-master-link_GM406889139.pdfIn PDF document text
    • https://www.clinicalsim.com/uploaded_files/userfiles/files/how-to-hack-someones-roblox-account-2021_GM431946152.pdfIn PDF document text
    • https://www.clinicalsim.com/uploaded_files/userfiles/files/how-to-get-minecraft-realms-for-free_GM479516143.pdfIn PDF document text
    • https://www.clinicalsim.com/uploaded_files/userfiles/files/coin-master-gameplay_GM406889139.pdfIn PDF document text
    • https://www.clinicalsim.com/uploaded_files/userfiles/files/coin-master-free-2021-spin-link_GM406889139.pdfIn PDF document text
    • https://www.clinicalsim.com/uploaded_files/userfiles/files/how-to-get-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • https://www.clinicalsim.com/uploaded_files/userfiles/files/coin-master-mod-apk-latest-version-free-download_GM406889139.pdfIn PDF document text
    • https://www.clinicalsim.com/uploaded_files/userfiles/files/minecraft-cheats-pc-2021_GM479516143.pdfIn PDF document text
    • https://www.clinicalsim.com/uploaded_files/userfiles/files/coin-master-daily-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://www.clinicalsim.com/uploaded_files/userfiles/files/app-store-coin-master-free-spins_GM406889139.pdfIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

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