Malicious PDF — malware analysis report

Static analysis result for SHA-256 7be194801bf66bdc…

MALICIOUS

PDF

34.9 KB Created: 2021-06-29 17:10:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 451edf46e7af2fa65a0c0709e25682b9 SHA-1: c21f78bc09fa9a6c4a8bb1aac1330cda48047ec3 SHA-256: 7be194801bf66bdcf8ccee3f2cb147e80d0319ba315e11ab036a58737512b4e8
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one to a known malicious redirector, designed to lure users into downloading potentially unwanted or malicious content related to game hacks. The presence of embedded URLs and the ML classifier's high confidence score indicate a malicious intent to redirect users to harmful sites. No scripts were extracted, but the document's structure and embedded links strongly suggest a phishing or social engineering attack.

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/roblox-dbz-final-stand-hack-game-hack In PDF document text
    • https://library.stikeswnpalu.ac.id/repository/unredeemed-free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/how-to-get-free-cards-on-coin-master_GM406889139.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/www-bandicam-com-free-robux_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/coin-master-free-spin-now_GM406889139.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/how-to-hack-jailbreak-roblox-ios_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/tiktok-free-view-iphone-apps_GM835599320.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/coin-master-free-spins-link-june-2021_GM406889139.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/hacker-hangout-roblox_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/tiktok-free-blue-tick_GM835599320.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/coin-master-100-free-spins-link_GM406889139.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/free-bobux_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/robux-hacks-2021-number_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/roblox-pastabin-hack-script_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/coinmasterfreespins_GM406889139.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/how-often-pubg-uc-flare-up_GM1330123889.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/free-beyblade-roblox_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/minecraft-survival-hacks_GM479516143.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/ban-hammer-roblox-free_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/hack-robux-infinitos-roblox_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/coin-master-free-daily-spins_GM406889139.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_off00003184.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3184 22116 bytes
SHA-256: 8da1c847e90061964836fbcf8fdec69b2901ff70a32af0883716251cf62e6865
font_01_sfnt_off00006216.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6216 19468 bytes
SHA-256: d2e89bba627829d3f2a6887b3edb7115474d8f28b4f1748091e37e3c07edc126

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