Malicious PDF — malware analysis report

Static analysis result for SHA-256 696adf86ce4b8a8d…

MALICIOUS

PDF

40.1 KB Created: 2021-05-10 17:30:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 1058c3064fc09fdf6544324e330c66d6 SHA-1: 0496a71e80486760fe1ccdd6be4b0df55f7a9f41 SHA-256: 696adf86ce4b8a8d8ebc2bee6e91b5521d40887adc9ce9bcbe2bd635cc56eb4a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically a site offering 'free generator / game hack' content. The presence of a visual download button lure further supports the malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest a social engineering attack aimed at tricking users into visiting a malicious URL, likely to download further malware or engage in phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9968

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 https://netcdn.xyz/app/406889139/master-coin-free-link-game-hack In PDF document text
    • http://www.pcclawyers.com.au/images/how-to-get-free-minecraft-skins_GM479516143.pdfIn PDF document text
    • http://www.pcclawyers.com.au/images/coin-master-free-daily-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://www.pcclawyers.com.au/images/minecraft-marketplace-free_GM479516143.pdfIn PDF document text
    • http://www.pcclawyers.com.au/images/is-roblox-free-on-pc_GM431946152.pdfIn PDF document text
    • http://www.pcclawyers.com.au/images/free-spin-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://www.pcclawyers.com.au/images/coin-master-spins-hack_GM406889139.pdfIn PDF document text
    • http://www.pcclawyers.com.au/images/coin-master-hack-app-2021_GM406889139.pdfIn PDF document text
    • http://www.pcclawyers.com.au/images/coin-master-download-hack-ios_GM406889139.pdfIn PDF document text
    • http://www.pcclawyers.com.au/images/free-spins-and-coins-from-coin-master-game_GM406889139.pdfIn PDF document text
    • http://www.pcclawyers.com.au/images/coin-master-hack-online-cheat_GM406889139.pdfIn PDF document text
    • http://www.pcclawyers.com.au/images/free-robux-games-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • http://www.pcclawyers.com.au/images/free-robux-with-no-survey_GM431946152.pdfIn PDF document text
    • http://www.pcclawyers.com.au/images/free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
    • http://www.pcclawyers.com.au/images/free-pet-treats-coin-master_GM406889139.pdfIn PDF document text
    • http://www.pcclawyers.com.au/images/coin-master-time-speed-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
stream_003_off0000447e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x447E 24048 bytes
SHA-256: c0a0562069bdce7bb56f3a8b765a1f75a2afb81ee2394eb864b705c9463835b1
font_01_sfnt_off00007bbd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BBD 17880 bytes
SHA-256: f325bc51a5f33ec2ea6c889aa635c0e4104002a1859551a05fb0fcec2a10294b