Malicious PDF — malware analysis report

Static analysis result for SHA-256 854409a59d0f0a20…

MALICIOUS

PDF

34.5 KB Created: 2021-06-28 19:07:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 7bab5988cc69ea3bf34391aa0d22402e SHA-1: bc1687ed38ace48d93e3feb9d28348d8ed18b9f5 SHA-256: 854409a59d0f0a20356a6793817ed86a98e410b47210fa0262c4c52796f71dd1
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing for a game hack redirector lure, directing users to a URL associated with malicious infrastructure. The document body explicitly contains the lure text and the malicious URL. While no scripts were extracted, the PDF structure and embedded URLs strongly suggest a phishing or malware distribution attempt.

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/what-is-the-robux-hex-value-in-cheat-engine-game-hack In PDF document text
    • https://goodtools.tw/upload/files/free-robux-sites-2021_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/roblox-pin-code-free_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/coin-master-free-spins-link-2021-ios_GM406889139.pdfIn PDF document text
    • https://goodtools.tw/upload/files/how-to-get-free-robux-live-stream_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/easy-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/minecraft-free-online_GM479516143.pdfIn PDF document text
    • https://goodtools.tw/upload/files/link-for-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://goodtools.tw/upload/files/roblox-promo-codes-2021-free_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/free-roblox-hack_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/how-to-get-your-robux-back-after-being-hacked_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/coin-master-free-coins-2021_GM406889139.pdfIn PDF document text
    • https://goodtools.tw/upload/files/free-robux-no-human_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/free-robux-generator-online-no-survey-no-download_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/coin-master-tricks_GM406889139.pdfIn PDF document text
    • https://goodtools.tw/upload/files/coin-master-hack-unlimited-spins-apk_GM406889139.pdfIn PDF document text
    • https://goodtools.tw/upload/files/free-flip-master-coins_GM406889139.pdfIn PDF document text
    • https://goodtools.tw/upload/files/coin-master-free-spins-hack_GM406889139.pdfIn PDF document text
    • https://goodtools.tw/upload/files/how-to-get-100-robux-for-free_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/free-shirt-roblox-2021_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/find-free-download-of-roblox-zombie-rush-for-windows7_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_off00002dbf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DBF 22720 bytes
SHA-256: 77c558a3a1b0ce469b89ccb0a0dffd04ad5c6d7e837dbefb367c986ac20805ec
font_01_sfnt_off000060be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60BE 19348 bytes
SHA-256: 5acae60e9f12f96da73567c4256f71b4e606c5dcb79258392f53b885f46b843e

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