Malicious PDF — malware analysis report

Static analysis result for SHA-256 472509a9af2a30f1…

MALICIOUS

PDF

36.0 KB Created: 2021-07-04 09:41:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 958a9a2f262154ffbaf2c21428e391a7 SHA-1: e46a20d821113c0570da154ac679eeeda989d551 SHA-256: 472509a9af2a30f1b4b02e10f8b787947856a7122a1c412716b80a10506bfdf8
180 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to malicious infrastructure, masquerading as generators for in-game currency or cheats. The primary lure is for 'Coin Master Free Spins', directing users to a known malicious redirector. The document body and embedded links strongly suggest a phishing or scam attempt to drive traffic to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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.tw/app/406889139/coin-master-free-spins-today-daily-links-game-hack In PDF document text
    • https://rerempahanspa.com/ckfinder/userfiles/files/coin-master-hack-trick-2021_GM406889139.pdfIn PDF document text
    • https://rerempahanspa.com/ckfinder/userfiles/files/free-robux-generator-lebansay_GM431946152.pdfIn PDF document text
    • https://rerempahanspa.com/ckfinder/userfiles/files/minecraft-for-free-games_GM479516143.pdfIn PDF document text
    • https://rerempahanspa.com/ckfinder/userfiles/files/easy-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://rerempahanspa.com/ckfinder/userfiles/files/completed-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://rerempahanspa.com/ckfinder/userfiles/files/master-coin-free-link_GM406889139.pdfIn PDF document text
    • https://rerempahanspa.com/ckfinder/userfiles/files/pubg-uc-nepal-price_GM1330123889.pdfIn PDF document text
    • https://rerempahanspa.com/ckfinder/userfiles/files/free-spin-link-coin-master_GM406889139.pdfIn PDF document text
    • https://rerempahanspa.com/ckfinder/userfiles/files/free-minecraft-account-generator_GM479516143.pdfIn PDF document text
    • https://rerempahanspa.com/ckfinder/userfiles/files/roblox-hack-2021_GM431946152.pdfIn PDF document text
    • https://rerempahanspa.com/ckfinder/userfiles/files/how-to-hack-roblox-accounts-on-phone-2021_GM431946152.pdfIn PDF document text
    • https://rerempahanspa.com/ckfinder/userfiles/files/how-to-get-free-robux-by-using-inspect_GM431946152.pdfIn PDF document text
    • https://rerempahanspa.com/ckfinder/userfiles/files/roblox-rocitizens-cheats-2021_GM431946152.pdfIn PDF document text
    • https://rerempahanspa.com/ckfinder/userfiles/files/fe-hacks-roblox-free_GM431946152.pdfIn PDF document text
    • https://rerempahanspa.com/ckfinder/userfiles/files/free-robux-without-offers_GM431946152.pdfIn PDF document text
    • https://rerempahanspa.com/ckfinder/userfiles/files/google-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://rerempahanspa.com/ckfinder/userfiles/files/minecraft-116-free-download_GM479516143.pdfIn PDF document text
    • https://rerempahanspa.com/ckfinder/userfiles/files/minecraft-java-edition-free-trial_GM479516143.pdfIn PDF document text
    • https://rerempahanspa.com/ckfinder/userfiles/files/mangocheats-com-hack-coin-master-cheat_GM406889139.pdfIn PDF document text
    • https://rerempahanspa.com/ckfinder/userfiles/files/can-you-actually-hack-roblox-for-rubox_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_off000034c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x34C5 22952 bytes
SHA-256: de54f592fb7d0b7fdd04541e2afff49ec5af635a87ff19463785e30d0f82bf37
font_01_sfnt_off0000684d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x684D 18940 bytes
SHA-256: 74e1d82992a432109423c701e24adf08bd24e863db22c1b49c4282e3a69c5270

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