Malicious PDF — malware analysis report

Static analysis result for SHA-256 0569053ceb2fc724…

MALICIOUS

PDF

36.2 KB Created: 2021-07-03 17:25:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 718d67435717f151bbe58b887ca2cf1c SHA-1: 3f9e2477a7fee176bd46c24a92b1aafad2b9ff61 SHA-256: 0569053ceb2fc724b526cd412779bb6b6dcb95dffd7e2ff81c3187cec1582be7
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains multiple links to a known malicious redirector infrastructure, specifically http://netcdn.tw/app/406889139/coin-master-free-spins-1-coin-master-game-hack. This URL is presented as a lure for game hacks and free spins, indicating a social engineering tactic to trick users into visiting potentially harmful sites. The presence of embedded URLs and the ML classifier's high confidence score support this assessment.

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.tw/app/406889139/coin-master-free-spins-1-coin-master-game-hack In PDF document text
    • https://www.harshulayurpharma.com/uploaded_files/userfiles/files/free-robux-promo-codes-november-2021_GM431946152.pdfIn PDF document text
    • https://www.harshulayurpharma.com/uploaded_files/userfiles/files/free-robux-cards_GM431946152.pdfIn PDF document text
    • https://www.harshulayurpharma.com/uploaded_files/userfiles/files/free-robux-glitch-2021_GM431946152.pdfIn PDF document text
    • https://www.harshulayurpharma.com/uploaded_files/userfiles/files/free-private-server-roblox_GM431946152.pdfIn PDF document text
    • https://www.harshulayurpharma.com/uploaded_files/userfiles/files/how-to-get-free-robux-and-obc-2021_GM431946152.pdfIn PDF document text
    • https://www.harshulayurpharma.com/uploaded_files/userfiles/files/how-to-get-the-galaxy-hair-for-free-in-roblox_GM431946152.pdfIn PDF document text
    • https://www.harshulayurpharma.com/uploaded_files/userfiles/files/coin-master-free-spins-and-coins-daily_GM406889139.pdfIn PDF document text
    • https://www.harshulayurpharma.com/uploaded_files/userfiles/files/hack-minecraft_GM479516143.pdfIn PDF document text
    • https://www.harshulayurpharma.com/uploaded_files/userfiles/files/how-to-get-free-robux-hack_GM431946152.pdfIn PDF document text
    • https://www.harshulayurpharma.com/uploaded_files/userfiles/files/ber-roblox-facbook-hcken_GM431946152.pdfIn PDF document text
    • https://www.harshulayurpharma.com/uploaded_files/userfiles/files/how-to-earn-robux-by-playing-games_GM431946152.pdfIn PDF document text
    • https://www.harshulayurpharma.com/uploaded_files/userfiles/files/roblox-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://www.harshulayurpharma.com/uploaded_files/userfiles/files/free-minecraft-hacks_GM479516143.pdfIn PDF document text
    • https://www.harshulayurpharma.com/uploaded_files/userfiles/files/free-robux-no-verification-no-survey_GM431946152.pdfIn PDF document text
    • https://www.harshulayurpharma.com/uploaded_files/userfiles/files/free-robux-codes-without-human-verification_GM431946152.pdfIn PDF document text
    • https://www.harshulayurpharma.com/uploaded_files/userfiles/files/roblox-april-fools-hack_GM431946152.pdfIn PDF document text
    • https://www.harshulayurpharma.com/uploaded_files/userfiles/files/coin-master-15-free-spin-link-of-last-5-days_GM406889139.pdfIn PDF document text
    • https://www.harshulayurpharma.com/uploaded_files/userfiles/files/roblox-free-chaser-codes_GM431946152.pdfIn PDF document text
    • https://www.harshulayurpharma.com/uploaded_files/userfiles/files/coin-master-free-spin-app-iphone_GM406889139.pdfIn PDF document text
    • https://www.harshulayurpharma.com/uploaded_files/userfiles/files/how-to-hack-roblox-accounts-2021_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_off00003780.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3780 22908 bytes
SHA-256: 3920f66a23a4873122b325cfea7b8be2945dce64d1613eaa660243d831db7114
font_01_sfnt_off00006b05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B05 18280 bytes
SHA-256: c6e059c9ed721b3913b3564b37d12693d805a011019115ba3458bc9a4db4920e

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