Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6b0a7fc94bded48…

MALICIOUS

PDF

36.3 KB Created: 2021-06-19 04:25:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 97db3ec26b6ddc38d81192d92824da22 SHA-1: fae0e072e29acf370f8a09a5a0b1122f5a84b032 SHA-256: d6b0a7fc94bded483bb7851b8a5eb0d302ec973f57fb839eb659cd157cbf1a71
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to redirector infrastructure, masquerading as a 'free generator / game hack' lure. The primary link, http://netcdn.co/app/431946152/how-to-get-robux-for-free-2021-without-human-verification-game-hack, is identified as malicious. The document body and embedded URLs reinforce this phishing attempt by promising free in-game currency or items, aiming to trick users into clicking the malicious links.

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/how-to-get-robux-for-free-2021-without-human-verification-game-hack In PDF document text
    • https://ogm-goettingen.de/images/is-free-robux-real_GM431946152.pdfIn PDF document text
    • https://ogm-goettingen.de/images/free-robux-only-1-step_GM431946152.pdfIn PDF document text
    • https://ogm-goettingen.de/images/binextreme-free-robux-pastebin-2021_GM431946152.pdfIn PDF document text
    • https://ogm-goettingen.de/images/roblox-hack-game_GM431946152.pdfIn PDF document text
    • https://ogm-goettingen.de/images/coin-master-hacks-for-iphone_GM406889139.pdfIn PDF document text
    • https://ogm-goettingen.de/images/robuxmatchcon_GM431946152.pdfIn PDF document text
    • https://ogm-goettingen.de/images/free-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • https://ogm-goettingen.de/images/i-want-free-robux_GM431946152.pdfIn PDF document text
    • https://ogm-goettingen.de/images/how-to-get-minecraft-for-free-on-iphone-2021_GM479516143.pdfIn PDF document text
    • https://ogm-goettingen.de/images/how-to-get-free-likes-on-tiktok_GM835599320.pdfIn PDF document text
    • https://ogm-goettingen.de/images/coin-master-play-online-free_GM406889139.pdfIn PDF document text
    • https://ogm-goettingen.de/images/free-robux-no-anti-bot-verification_GM431946152.pdfIn PDF document text
    • https://ogm-goettingen.de/images/is-minecraft-free-on-nintendo-switch_GM479516143.pdfIn PDF document text
    • https://ogm-goettingen.de/images/where-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://ogm-goettingen.de/images/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://ogm-goettingen.de/images/coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • https://ogm-goettingen.de/images/app-for-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://ogm-goettingen.de/images/coin-master-heaven-free-spins-today_GM406889139.pdfIn PDF document text
    • https://ogm-goettingen.de/images/free-robux-2021-ios_GM431946152.pdfIn PDF document text
    • https://ogm-goettingen.de/images/tiktok-free-view-like-video_GM835599320.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
stream_002_off00003185.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3185 23192 bytes
SHA-256: 6212fad6958072ec56adc4e53fa72bae77526edf455f4fc86272c2ec2b05c1b1
font_01_sfnt_off000065ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65EA 20076 bytes
SHA-256: 57e1b2b9bf25161f1705615c4df2c23fff39fb38785ccce50b0d61f05bff5fc1

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