Malicious PDF — malware analysis report

Static analysis result for SHA-256 af2c7f88eb0613d3…

MALICIOUS

PDF

35.0 KB Created: 2021-06-27 04:07:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 26c6563a8824d0084f5237a3959d0afd SHA-1: 6c136a979859661caed855c3f834272d21da82ca SHA-256: af2c7f88eb0613d3d7701a9517fab50c74bc892659a05a050cc75e45db220769
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains embedded links that redirect to malicious infrastructure, specifically promoting 'free Robux' or game hacks. The primary link, http://netcdn.co/app/431946152/get-20-free-robux-game-hack, is identified as a malicious redirector. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a social engineering lure designed to lead users to potentially harmful content or further malicious downloads.

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/get-20-free-robux-game-hack In PDF document text
    • https://ibelive.com.tw/image/data/files/how-to-hack-robux-with-cheat-engine-2021_GM431946152.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/master-coin-hack-mod_GM406889139.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/coin-master-free-soins_GM406889139.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/free-minecraft-gift-card_GM479516143.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/minecraft-bedrock-free-with-java_GM479516143.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/how-to-change-your-username-on-roblox-for-free-2021_GM431946152.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/coin-master-free-spins-link-2021-no-verification_GM406889139.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/coin-master-links-2021_GM406889139.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/elfenprinz01-roblox-hacker_GM431946152.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/roblox-hack-ios-jailbreak_GM431946152.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/free-roblox-intros_GM431946152.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/free-spins-coin-master-twitter_GM406889139.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/pubg-uc-600-sri-lanka-price_GM1330123889.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/how-to-get-free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/free-outroageus-roblox-codes_GM431946152.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/how-to-use-cheat-engine-with-roblox_GM431946152.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/roblox-account-hacker-tool_GM431946152.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/spin-link_GM406889139.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/how-to-get-free-robux-right-away_GM431946152.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/how-to-get-free-robux-on-pc_GM431946152.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003342.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3342 21916 bytes
SHA-256: 7f61c52a0fa4f57fd665825d768a1d52b2b00210ca7ca5101fd8d38986f84d40
font_01_sfnt_off0000639f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x639F 19116 bytes
SHA-256: 1cf889969c26a56d684d46652fd3c203ebb0903ed00d2a17eb89b77d6cd575e7

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