Malicious PDF — malware analysis report

Static analysis result for SHA-256 18fa5ee5f52edea2…

MALICIOUS

PDF

33.0 KB Created: 2021-07-16 06:27:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 028c2a2ee25cdc9aac63941975a15511 SHA-1: 5a7cdae6ed7075af4ab3e7e09994016968cd13b8 SHA-256: 18fa5ee5f52edea28abce408c136e8dec063544565df3b1e0534dd443e1f23c8
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to a known malicious redirector, disguised as a "Coin Master Card Hack" and "Coin Master Generator". The document body explicitly contains the malicious URL and a call to action to "CLICK HERE TO ACCESS COIN MASTER GENERATOR", indicating a lure to a phishing or scam site. The presence of embedded URLs and the nature of the lure strongly suggest a phishing or social engineering attack, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9900

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-card-hack-game-hack In PDF document text
    • https://www.soil2soul.ae/uploaded_files/userfiles/files/daily-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • https://www.soil2soul.ae/uploaded_files/userfiles/files/coin-master-free-spins-and-coins-blogspot_GM406889139.pdfIn PDF document text
    • https://www.soil2soul.ae/uploaded_files/userfiles/files/free-spin-coin-master-game_GM406889139.pdfIn PDF document text
    • https://www.soil2soul.ae/uploaded_files/userfiles/files/how-do-you-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://www.soil2soul.ae/uploaded_files/userfiles/files/free-robux-website-no-password_GM431946152.pdfIn PDF document text
    • https://www.soil2soul.ae/uploaded_files/userfiles/files/coin-master-spin-hack-trick_GM406889139.pdfIn PDF document text
    • https://www.soil2soul.ae/uploaded_files/userfiles/files/free-robux-com-roblox_GM431946152.pdfIn PDF document text
    • https://www.soil2soul.ae/uploaded_files/userfiles/files/roblox-games-com-free_GM431946152.pdfIn PDF document text
    • https://www.soil2soul.ae/uploaded_files/userfiles/files/coin-master-hacks_GM406889139.pdfIn PDF document text
    • https://www.soil2soul.ae/uploaded_files/userfiles/files/mcmaster-club-coin-master-hack_GM406889139.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_off00002c33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2C33 23044 bytes
SHA-256: 46f267d1a4d766294fa425225d1fa69278e4d2d3c0f25e736b8aae93aba885bb
font_01_sfnt_off00005fff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FFF 17888 bytes
SHA-256: 5efdab5adc2480a04776318c37b62879fa5095bdd48049ba40adaf7a695a074d

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