Malicious PDF — malware analysis report

Static analysis result for SHA-256 694b0629b3ba19ae…

MALICIOUS

PDF

34.2 KB Created: 2021-06-30 00:23:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-02
MD5: 2237845a33b1a5496a299adf57ca0919 SHA-1: 62be9a7d8b8003e11dfac3c6de1a314b9a4fe661 SHA-256: 694b0629b3ba19aef91ba366ad3db7b18dfc5605d21df7dcb3b35b16a205914f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to malicious infrastructure, specifically promoting game hacks and cheats. The primary lure appears to be a 'Dragod Hack Robux' generator, directing users to http://netcdn.co/app/431946152/dragod-hack-robux-game-hack. This suggests a phishing or scam campaign aimed at tricking users into visiting potentially harmful sites. No scripts were extracted, but the embedded URLs are the main indicators of 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/dragod-hack-robux-game-hack In PDF document text
    • https://www.advancissurgical.com/uploads/files/files/roblox-hack-links_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/free-robux-earn_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/coin-master-game-hack-apk_GM406889139.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/hack-exploit-roblox-download_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/free-coin-master-hacks-no-verification-or-survey_GM406889139.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/how-to-get-free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/free-spin-coin-master-app-download_GM406889139.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/roblox-free-item-codes_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/coin-master-hacked-apk-download-for-android_GM406889139.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/free-ninja-legends-groups-roblox_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/how-to-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/coin-master-heaven-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/how-to-get-free-admin-on-any-roblox-game-2021_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/amazing-hacker-names-for-roblox_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/free-roblox-hack-accounts_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/free-gold-cards-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/rbx-claim_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/free-robux-codes-2021-not-used_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/minecraft-education-edition-free_GM479516143.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/free-robux-offer-earning-sites_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_off00002feb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FEB 21924 bytes
SHA-256: 0109ed622c4054be686eb02ae8395fe4d35bc511eab92c281ad63779e9105d03
font_01_sfnt_off00006091.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6091 19064 bytes
SHA-256: 688e1541f2341cc3d7c2d45dec1dd133b02b41f07bc383d1de82c608ae5af390

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