Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c902976239d2811…

MALICIOUS

PDF

34.2 KB Created: 2021-06-27 19:20:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 1af9dd2139b9d30cde9198122b5c3400 SHA-1: 762285e296f22e86bc93bc42eb97e4adc55bf700 SHA-256: 3c902976239d2811ab8ee19744b44c6fc0957a93a4ca13c29ca239dbc348da39
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that lead to a known malicious redirector, disguised as game hacks and generators. The primary lure URL is http://netcdn.co/app/431946152/god-mode-roblox-cheat-engine-game-hack. This suggests the document is part of a phishing campaign aiming to redirect users to potentially harmful content or further malware. No scripts were extracted, but the document structure and embedded links strongly indicate a malicious intent.

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/god-mode-roblox-cheat-engine-game-hack In PDF document text
    • https://digilib.stimlog.ac.id/repository/coin-master-free-spins-11-01-2021_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/fighting-free-card-coin-master_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/roblox-but_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-robux-generator-2021-real_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/how-to-make-hawt-sauce-roblox-hack_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-robux-roblox-yolasite_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/roblox-imagine_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/minecraft-hacked-client-bedrock_GM479516143.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/minecraft-reach-hack_GM479516143.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/script-executor-roblox-free_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/roblox-4all-cool-hack-robux_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/kuso-ico-roblox-free-robux_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/roblox-free-group-uniform_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-fe-roblox-admin-scripts_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/robux-hacks-2021_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/roblox-bloxburg-free-bs_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/beast-mode-face-roblox-free_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/how-to-get-free-admin-on-roblox-life-in-paradise_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/how-to-make-a-badge-for-free-in-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-roblox-accounts-2021_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_off00002e2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E2D 22308 bytes
SHA-256: d9ab9f81fb426c7472aa28074af3deac8a44491b6ae3ae691a2e27ad7c31d738
font_01_sfnt_off00005fc9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FC9 19248 bytes
SHA-256: 9ace2ea56be3f72b07b74fa5d3b32c4c5db494302f7e4a97bc4c60f5c2dad985

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