Malicious PDF — malware analysis report

Static analysis result for SHA-256 edeb4de9b458710b…

MALICIOUS

PDF

35.2 KB Created: 2021-06-18 21:56:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 065d5c3cba13e71dac1d8f67d2120e84 SHA-1: 0e2c685db066cb42c1fea0761a3027a3b7eb1045 SHA-256: edeb4de9b458710bd76bf67275311daffc1c24783478af617a40062e4f6a6206
220 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links to external sites, many of which are part of a link farm designed to attract traffic through SEO manipulation. The primary link directs to a malicious redirector disguised as a 'game hack' generator. This indicates a phishing or scam attempt to lure users to potentially malicious websites. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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.
  • 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.
  • 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-tix-on-roblox-with-cheat-engine-game-hack In PDF document text
    • http://www.mrscoreboardsworld.com/uploaded_files/userfiles/files/free-robux-by-watching-ads_GM431946152.pdfIn PDF document text
    • http://www.mrscoreboardsworld.com/uploaded_files/userfiles/files/coin-master-hack-apk-april-12-2021_GM406889139.pdfIn PDF document text
    • http://www.mrscoreboardsworld.com/uploaded_files/userfiles/files/rbx-roblox_GM431946152.pdfIn PDF document text
    • http://www.mrscoreboardsworld.com/uploaded_files/userfiles/files/how-to-make-your-game-really-popular-hack-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.mrscoreboardsworld.com/uploaded_files/userfiles/files/how-to-get-800-robux-for-free_GM431946152.pdfIn PDF document text
    • http://www.mrscoreboardsworld.com/uploaded_files/userfiles/files/cm-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://www.mrscoreboardsworld.com/uploaded_files/userfiles/files/pokemon-go-free-coins-hack_GM1094591345.pdfIn PDF document text
    • http://www.mrscoreboardsworld.com/uploaded_files/userfiles/files/is-hello-neighbour-free-to-download-of-roblox_GM431946152.pdfIn PDF document text
    • http://www.mrscoreboardsworld.com/uploaded_files/userfiles/files/free-robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://www.mrscoreboardsworld.com/uploaded_files/userfiles/files/minecraft-windows-10-hacks_GM479516143.pdfIn PDF document text
    • http://www.mrscoreboardsworld.com/uploaded_files/userfiles/files/free-links-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.mrscoreboardsworld.com/uploaded_files/userfiles/files/free-roblox-toy-codes-not-used_GM431946152.pdfIn PDF document text
    • http://www.mrscoreboardsworld.com/uploaded_files/userfiles/files/roblox-pro-hack_GM431946152.pdfIn PDF document text
    • http://www.mrscoreboardsworld.com/uploaded_files/userfiles/files/robux-2021_GM431946152.pdfIn PDF document text
    • http://www.mrscoreboardsworld.com/uploaded_files/userfiles/files/pokemon-go-free-90hz_GM1094591345.pdfIn PDF document text
    • http://www.mrscoreboardsworld.com/uploaded_files/userfiles/files/how-to-get-free-robux-easy-2021_GM431946152.pdfIn PDF document text
    • http://www.mrscoreboardsworld.com/uploaded_files/userfiles/files/roblox-cheat-codes-shift_GM431946152.pdfIn PDF document text
    • http://www.mrscoreboardsworld.com/uploaded_files/userfiles/files/hacks-para-roblox_GM431946152.pdfIn PDF document text
    • http://www.mrscoreboardsworld.com/uploaded_files/userfiles/files/free-robux-just-click_GM431946152.pdfIn PDF document text
    • http://www.mrscoreboardsworld.com/uploaded_files/userfiles/files/how-do-i-get-free-spins-on-coin-master_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_off00003209.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3209 22332 bytes
SHA-256: 609aa8182e91fc25343bff990ecde834d2fc3db4eb440e8a54bd8a9c0dc0c1c3
font_01_sfnt_off000063f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63F0 19240 bytes
SHA-256: 87eb3ad43e27182ba4379622c3ea51dbaf11347fd058939d3d6ff338974fc92d

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