Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8e3ae4f1c7b1485…

MALICIOUS

PDF

33.6 KB Created: 2021-06-19 02:58:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 8cd64efafcca1f410a88968aac2c1362 SHA-1: d526fe33de1907a6d63558e79633b932d203ac2f SHA-256: e8e3ae4f1c7b1485250137bd8003bffedc0f63f3d397406ad01a383f4ff2a5e4
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links, including one to a known malicious redirector infrastructure at http://netcdn.co/app/431946152/claim-free-robux-2021-game-hack. The document body and embedded links suggest a lure for free game currency or hacks, a common social engineering tactic. The presence of multiple redirector links indicates a strong intent to lead the user to potentially harmful content.

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/claim-free-robux-2021-game-hack In PDF document text
    • https://i-photo7.com/image/data/files/coin-master-20-free-spins-link-today_GM406889139.pdfIn PDF document text
    • https://i-photo7.com/image/data/files/wurst-hacked-client_GM479516143.pdfIn PDF document text
    • https://i-photo7.com/image/data/files/free-spin-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • https://i-photo7.com/image/data/files/how-to-get-free-tix-on-roblox-ipad_GM431946152.pdfIn PDF document text
    • https://i-photo7.com/image/data/files/coin-master-free-link-facebook_GM406889139.pdfIn PDF document text
    • https://i-photo7.com/image/data/files/how-to-get-free-robux-proof_GM431946152.pdfIn PDF document text
    • https://i-photo7.com/image/data/files/hack-coin-master-spin_GM406889139.pdfIn PDF document text
    • https://i-photo7.com/image/data/files/free-roblox-app-for-android_GM431946152.pdfIn PDF document text
    • https://i-photo7.com/image/data/files/coin-master-free-daily-spins-link_GM406889139.pdfIn PDF document text
    • https://i-photo7.com/image/data/files/how-to-get-minecraft-dungeons-for-free_GM479516143.pdfIn PDF document text
    • https://i-photo7.com/image/data/files/roblox-help-free-robux_GM431946152.pdfIn PDF document text
    • https://i-photo7.com/image/data/files/free-minecraft-realm-codes_GM479516143.pdfIn PDF document text
    • https://i-photo7.com/image/data/files/free-robux-generator-2021-no-survey_GM431946152.pdfIn PDF document text
    • https://i-photo7.com/image/data/files/free-robux-com-roblox_GM431946152.pdfIn PDF document text
    • https://i-photo7.com/image/data/files/free-robux-promo-codes_GM431946152.pdfIn PDF document text
    • https://i-photo7.com/image/data/files/stickmasterluke-100b-free-robux_GM431946152.pdfIn PDF document text
    • https://i-photo7.com/image/data/files/free-coin-master-hacks_GM406889139.pdfIn PDF document text
    • https://i-photo7.com/image/data/files/robuxmatch-com-free-robux_GM431946152.pdfIn PDF document text
    • https://i-photo7.com/image/data/files/how-to-get-free-robux-on-samsung-tablet-2021_GM431946152.pdfIn PDF document text
    • https://i-photo7.com/image/data/files/minecraft-free-exe_GM479516143.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_off00002d6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D6D 21580 bytes
SHA-256: f61db1221a14ad3f620a48d5646b38ca4997eb21d8c14c2993603cb8c9162533
font_01_sfnt_off00005cb3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CB3 19572 bytes
SHA-256: e2a70c361cce8918451dbd453ed2625daa16f1703b076e8801d8ca2fa6dc8dca

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