Malicious PDF — malware analysis report

Static analysis result for SHA-256 2cb03b9aa1a05269…

MALICIOUS

PDF

46.8 KB Created: 2021-06-03 08:05:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 81cc9dcc3f43eee5028659e2b0b15ad9 SHA-1: b8317aba9421fe89923037e4b200507b179f93ca SHA-256: 2cb03b9aa1a05269ab966597803096eeafa4eac56c55ec850a7744eea2cb50c4
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains multiple links to a known malicious redirector infrastructure, disguised as game hack downloads. The ML classifier also flagged this PDF as malicious. The embedded links likely lead to a second-stage payload or phishing page, aiming to exploit the user's interest in free game items.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9769

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 https://netcdn.online/app/479516143/minecraft-hack-download-game-hack In PDF document text
    • http://www.middleeastautorepair.com/uploaded_files/userfiles/files/apps-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.middleeastautorepair.com/uploaded_files/userfiles/files/how-to-get-java-minecraft-free_GM479516143.pdfIn PDF document text
    • http://www.middleeastautorepair.com/uploaded_files/userfiles/files/how-to-get-free-robux-fast-and-easy_GM431946152.pdfIn PDF document text
    • http://www.middleeastautorepair.com/uploaded_files/userfiles/files/coin-master-free-spins-daily-1-ga_GM406889139.pdfIn PDF document text
    • http://www.middleeastautorepair.com/uploaded_files/userfiles/files/offers-for-robux_GM431946152.pdfIn PDF document text
    • http://www.middleeastautorepair.com/uploaded_files/userfiles/files/free-coin-coin-master_GM406889139.pdfIn PDF document text
    • http://www.middleeastautorepair.com/uploaded_files/userfiles/files/coin-master-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://www.middleeastautorepair.com/uploaded_files/userfiles/files/earn-free-robux_GM431946152.pdfIn PDF document text
    • http://www.middleeastautorepair.com/uploaded_files/userfiles/files/worst-roblox-avatars_GM431946152.pdfIn PDF document text
    • http://www.middleeastautorepair.com/uploaded_files/userfiles/files/free-links-coin-master_GM406889139.pdfIn PDF document text
    • http://www.middleeastautorepair.com/uploaded_files/userfiles/files/download-hack-coin-master-apk_GM406889139.pdfIn PDF document text
    • http://www.middleeastautorepair.com/uploaded_files/userfiles/files/free-spin-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://www.middleeastautorepair.com/uploaded_files/userfiles/files/free-realistic-minecraft-texture-packs_GM479516143.pdfIn PDF document text
    • http://www.middleeastautorepair.com/uploaded_files/userfiles/files/free-robux-not-fake_GM431946152.pdfIn PDF document text
    • http://www.middleeastautorepair.com/uploaded_files/userfiles/files/get-free-tiktok-likes_GM835599320.pdfIn PDF document text
    • http://www.middleeastautorepair.com/uploaded_files/userfiles/files/coin-master-card-hack-apk_GM406889139.pdfIn PDF document text
    • http://www.middleeastautorepair.com/uploaded_files/userfiles/files/games-that-can-be-hacked_GM431946152.pdfIn PDF document text
    • http://www.middleeastautorepair.com/uploaded_files/userfiles/files/minecraft-name-tag-hacks_GM479516143.pdfIn PDF document text
    • http://www.middleeastautorepair.com/uploaded_files/userfiles/files/free-coins-and-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.middleeastautorepair.com/uploaded_files/userfiles/files/minecraft-free-apk_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000524e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x524E 24576 bytes
SHA-256: e638f325327f58a409478b7ec42b2ee72b76ab4ae9fb8fcd7b4847eb50e4bed8
font_01_sfnt_off000089e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89E3 2856 bytes
SHA-256: 8c5d9bcb386d88c7f99323d8d482e46ea21dea038a5b842744dd5d39b26b2c44
font_02_sfnt_off000093ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x93BA 18460 bytes
SHA-256: 1986b917a50867421859734d90e96ce19f33df6ec3e97c13366e475f22860bb7

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