Malicious PDF — malware analysis report

Static analysis result for SHA-256 94df087ff6c191c1…

MALICIOUS

PDF

34.2 KB Created: 2021-06-18 06:58:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 1c18fb45cfbaec1c3ae75c602e55038d SHA-1: 7ab5c86d91e01c0db6171dba1096d5e0365d46d3 SHA-256: 94df087ff6c191c1a52d3f4e6bad5db307c7d4ef6d3a230ea54a84157f6bd1de
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a common lure of free game hacks and currency to entice users into clicking malicious links. The primary link directs to a known malicious redirector infrastructure, which likely serves as a gateway to further malicious content or exploits. The document's structure and embedded URLs suggest a phishing or malware distribution campaign.

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/idenity-fraud-hacks-roblox-game-hack In PDF document text
    • http://www.nelsonssales.com/media/storage/editor/files/robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • http://www.nelsonssales.com/media/storage/editor/files/free-group-roblox_GM431946152.pdfIn PDF document text
    • http://www.nelsonssales.com/media/storage/editor/files/minecraft-windows-10-hacks_GM479516143.pdfIn PDF document text
    • http://www.nelsonssales.com/media/storage/editor/files/minecraft-ore-finder-mod_GM479516143.pdfIn PDF document text
    • http://www.nelsonssales.com/media/storage/editor/files/install-coin-master_GM406889139.pdfIn PDF document text
    • http://www.nelsonssales.com/media/storage/editor/files/tiktok-free-view-iphone-7-plus_GM835599320.pdfIn PDF document text
    • http://www.nelsonssales.com/media/storage/editor/files/coin-master-2021-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://www.nelsonssales.com/media/storage/editor/files/coin-master-free-bonus_GM406889139.pdfIn PDF document text
    • http://www.nelsonssales.com/media/storage/editor/files/coin-master-hack-xyz_GM406889139.pdfIn PDF document text
    • http://www.nelsonssales.com/media/storage/editor/files/roblox-restaurant-tycoon-free-money_GM431946152.pdfIn PDF document text
    • http://www.nelsonssales.com/media/storage/editor/files/free-diamonds-coin-master_GM406889139.pdfIn PDF document text
    • http://www.nelsonssales.com/media/storage/editor/files/minecraft-windows-10-hack-client-2021_GM479516143.pdfIn PDF document text
    • http://www.nelsonssales.com/media/storage/editor/files/roblox-hack-app_GM431946152.pdfIn PDF document text
    • http://www.nelsonssales.com/media/storage/editor/files/minecraft-hacks-115-2_GM479516143.pdfIn PDF document text
    • http://www.nelsonssales.com/media/storage/editor/files/mistplay-robux_GM431946152.pdfIn PDF document text
    • http://www.nelsonssales.com/media/storage/editor/files/free-spins-and-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.nelsonssales.com/media/storage/editor/files/minecraft-hacks-xbox_GM479516143.pdfIn PDF document text
    • http://www.nelsonssales.com/media/storage/editor/files/tiktok-free-fans-video_GM835599320.pdfIn PDF document text
    • http://www.nelsonssales.com/media/storage/editor/files/50-free-tiktok-likes-trial_GM835599320.pdfIn PDF document text
    • http://www.nelsonssales.com/media/storage/editor/files/free-tiktok-likes-no-human-verification-or-download_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
font_00_sfnt_off00002f97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F97 21804 bytes
SHA-256: db4c8355e1d318e03e244f900849dab736d751e5f5f85110ea0e561ff767144f
font_01_sfnt_off00005f3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F3B 19540 bytes
SHA-256: a4ebc507e4637ef8dd30745bdfd4c2ce5fa7ca2ea340e721c0908dfa1c5bb705

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