Malicious PDF — malware analysis report

Static analysis result for SHA-256 53b5e5166e5c8627…

MALICIOUS

PDF

35.1 KB Created: 2021-07-04 11:05:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: e9ffcc1d8cc5a5b456d0acf059851ff2 SHA-1: 3d8effc50becc5f754b069279c20909474c3cfd7 SHA-256: 53b5e5166e5c8627ec557253e632ce2fd14f97c331d65a20ba9855731600825b
220 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains numerous links to external websites, many of which are hosted on known malicious redirector infrastructure. The document body and heuristics indicate a lure for game hacks and cheats, aiming to trick users into visiting these sites. The presence of a malicious redirector URL suggests the primary goal is to lead users to potentially harmful content or malware downloads.

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.tw/app/479516143/minecraft-game-hack In PDF document text
    • http://perpustakaan.stietenggarong.ac.id/repository/coin-master-hacks-and-cheats_GM406889139.pdfIn PDF document text
    • http://perpustakaan.stietenggarong.ac.id/repository/free-roblox-toy-redemption-codes_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stietenggarong.ac.id/repository/robux-generator-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stietenggarong.ac.id/repository/how-to-hack-someones-roblox-account-on-pc_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stietenggarong.ac.id/repository/minecraft-tools_GM479516143.pdfIn PDF document text
    • http://perpustakaan.stietenggarong.ac.id/repository/optifine-mcpe_GM479516143.pdfIn PDF document text
    • http://perpustakaan.stietenggarong.ac.id/repository/roblox-play-as-guest-free_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stietenggarong.ac.id/repository/how-to-buy-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stietenggarong.ac.id/repository/free-roblox-key-words_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stietenggarong.ac.id/repository/free-minecraft-coloring-pages_GM479516143.pdfIn PDF document text
    • http://perpustakaan.stietenggarong.ac.id/repository/nice-roblox-games-to-hack_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stietenggarong.ac.id/repository/free-robux-paste-data_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stietenggarong.ac.id/repository/roblox-robux-hack-no-survey-no-human-verification_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stietenggarong.ac.id/repository/coin-master-guide-to-free-spins-and-rewards_GM406889139.pdfIn PDF document text
    • http://perpustakaan.stietenggarong.ac.id/repository/jailbreak-roblox-hack_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stietenggarong.ac.id/repository/coin-master-hack-tool-v1-9-pc_GM406889139.pdfIn PDF document text
    • http://perpustakaan.stietenggarong.ac.id/repository/roblox-como-tener-robux-gratis-2021-octubre-nuevo-hack_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stietenggarong.ac.id/repository/coin-master-daily-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • http://perpustakaan.stietenggarong.ac.id/repository/coin-master-coins_GM406889139.pdfIn PDF document text
    • http://perpustakaan.stietenggarong.ac.id/repository/free-roblox-codes-for-robux-9_GM431946152.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_off00003561.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3561 22628 bytes
SHA-256: e997636414d253f7644ad3e3ac958b5e5fdb426cf8eb6752bfccefa449d7092a
font_01_sfnt_off000067e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67E4 17856 bytes
SHA-256: 18153eb78e52d10f573a403757bf08b8b042ff0dae7dd3b4cc440df27f37a65e

Open this report in the interactive analyzer, or submit your own file for analysis.