Malicious PDF — malware analysis report

Static analysis result for SHA-256 c061dd5f8cac9463…

MALICIOUS

PDF

36.6 KB Created: 2021-06-28 10:45:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 40c9e2e42993c5bc87a191f53d3fb711 SHA-1: 020d30667b472111caecfb6486972774ba27b2ed SHA-256: c061dd5f8cac9463946076b372b197bf28f07ef2d6e7164a71ba5414676e4b3b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure related to game hacks and free in-game currency to entice users. It contains embedded links that redirect to malicious infrastructure, specifically http://netcdn.co/app/431946152/gui-roblox-dinosaur-simulator-hack-2021-game-hack, which is flagged as a malicious redirector. The document's content and the presence of malicious links strongly suggest a phishing or scam attempt, likely delivered as a spearphishing attachment.

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/gui-roblox-dinosaur-simulator-hack-2021-game-hack In PDF document text
    • https://e-learning.manurulhuda-csp.sch.id/__statics/gudangsoal/files/free-roblox-website_GM431946152.pdfIn PDF document text
    • https://e-learning.manurulhuda-csp.sch.id/__statics/gudangsoal/files/free-appsfor-coin-master-daily-rewards_GM406889139.pdfIn PDF document text
    • https://e-learning.manurulhuda-csp.sch.id/__statics/gudangsoal/files/how-to-use-cheat-engine-on-roblox-2021-august_GM431946152.pdfIn PDF document text
    • https://e-learning.manurulhuda-csp.sch.id/__statics/gudangsoal/files/free-2021-robux_GM431946152.pdfIn PDF document text
    • https://e-learning.manurulhuda-csp.sch.id/__statics/gudangsoal/files/roblox-promo-codes-for-free-robux_GM431946152.pdfIn PDF document text
    • https://e-learning.manurulhuda-csp.sch.id/__statics/gudangsoal/files/dominus-roblox-free_GM431946152.pdfIn PDF document text
    • https://e-learning.manurulhuda-csp.sch.id/__statics/gudangsoal/files/claimrobux-net_GM431946152.pdfIn PDF document text
    • https://e-learning.manurulhuda-csp.sch.id/__statics/gudangsoal/files/roblox-superhero-bundle-free-2021_GM431946152.pdfIn PDF document text
    • https://e-learning.manurulhuda-csp.sch.id/__statics/gudangsoal/files/coin-master-hack-version_GM406889139.pdfIn PDF document text
    • https://e-learning.manurulhuda-csp.sch.id/__statics/gudangsoal/files/freespinandcoin-blogspot-com_GM406889139.pdfIn PDF document text
    • https://e-learning.manurulhuda-csp.sch.id/__statics/gudangsoal/files/roblox-promo-codes-2021-robux_GM431946152.pdfIn PDF document text
    • https://e-learning.manurulhuda-csp.sch.id/__statics/gudangsoal/files/free-minecraft-java-edition-account_GM479516143.pdfIn PDF document text
    • https://e-learning.manurulhuda-csp.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-without-verification_GM431946152.pdfIn PDF document text
    • https://e-learning.manurulhuda-csp.sch.id/__statics/gudangsoal/files/play-full-version-of-minecraft-for-free-no-download_GM479516143.pdfIn PDF document text
    • https://e-learning.manurulhuda-csp.sch.id/__statics/gudangsoal/files/get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • https://e-learning.manurulhuda-csp.sch.id/__statics/gudangsoal/files/minecraft-for-laptop-free_GM479516143.pdfIn PDF document text
    • https://e-learning.manurulhuda-csp.sch.id/__statics/gudangsoal/files/easy-roblox-hacks-not-malware_GM431946152.pdfIn PDF document text
    • https://e-learning.manurulhuda-csp.sch.id/__statics/gudangsoal/files/coin-master-free-spins-2021-link_GM406889139.pdfIn PDF document text
    • https://e-learning.manurulhuda-csp.sch.id/__statics/gudangsoal/files/hack-coin-master-game-apk-download_GM406889139.pdfIn PDF document text
    • https://e-learning.manurulhuda-csp.sch.id/__statics/gudangsoal/files/free-roblox-scripts_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 7

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_off000034da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x34DA 22632 bytes
SHA-256: a6c98c73283d75899addd2220fed51218c744aa4c334bfc9c9a243121ed399ec
font_01_sfnt_off00006792.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6792 19852 bytes
SHA-256: 1b02715c143f768d3ac0f15436308ce97c22648c7de93f6625e5003fa1c1339d

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