Malicious PDF — malware analysis report

Static analysis result for SHA-256 828eba87df047a00…

MALICIOUS

PDF

35.9 KB Created: 2021-06-18 01:17:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: e9885708c14f85acaf0d24670a0ec286 SHA-1: ec848782fe8dbdc4423df46735c071d682c0a756 SHA-256: 828eba87df047a00e5e7af12cedae7fbf840012079bed6e3ba648041a2999b81
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links designed to lure users into clicking on offers for free game currency and hacks. These links redirect to malicious infrastructure, specifically a domain known for hosting such lures. The document body and embedded URLs strongly suggest a phishing or scam attempt, likely intended to lead users to further malicious content or compromise their accounts.

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/free-appstore-codes-for-roblox-robux-game-hack In PDF document text
    • http://reggieslockandkey.com/images/daily-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://reggieslockandkey.com/images/www-free-roblox-hacks-net_GM431946152.pdfIn PDF document text
    • http://reggieslockandkey.com/images/free-tiktok-likes-and-followers_GM835599320.pdfIn PDF document text
    • https://reggieslockandkey.com/images/robux-now_GM431946152.pdfIn PDF document text
    • http://reggieslockandkey.com/images/roblox-hack-me_GM431946152.pdfIn PDF document text
    • https://reggieslockandkey.com/images/blox-fish-free-robux_GM431946152.pdfIn PDF document text
    • http://reggieslockandkey.com/images/claim-free-robux_GM431946152.pdfIn PDF document text
    • http://reggieslockandkey.com/images/roblox-building-hacks_GM431946152.pdfIn PDF document text
    • https://reggieslockandkey.com/images/roblox-com-free-draw_GM431946152.pdfIn PDF document text
    • https://reggieslockandkey.com/images/free-minecraft-wallpaper_GM479516143.pdfIn PDF document text
    • https://reggieslockandkey.com/images/robux-free-online_GM431946152.pdfIn PDF document text
    • http://reggieslockandkey.com/images/free-robux-that-actually-works-2021_GM431946152.pdfIn PDF document text
    • http://reggieslockandkey.com/images/free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://reggieslockandkey.com/images/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://reggieslockandkey.com/images/how-to-get-free-tiktok-followers_GM835599320.pdfIn PDF document text
    • https://reggieslockandkey.com/images/coin-and-spin-link_GM406889139.pdfIn PDF document text
    • https://reggieslockandkey.com/images/free-roblox-usernames-and-passwords_GM431946152.pdfIn PDF document text
    • https://reggieslockandkey.com/images/how-to-hack-roblox-games_GM431946152.pdfIn PDF document text
    • http://reggieslockandkey.com/images/minecraft-pocket-edition-free-download_GM479516143.pdfIn PDF document text
    • https://reggieslockandkey.com/images/roblox-hack-me-robux_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_off00003458.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3458 22800 bytes
SHA-256: 203990e10c91c6f2aa402cae52dbeadd90e6ecf41aa0fb548afb94d248bffc89
font_01_sfnt_off0000674d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x674D 19056 bytes
SHA-256: a1e4a1c518aa15eaf7e4be2f9f81052d80ab7a71bbf9c2a1da6e770226935e0a

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