Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd70fc609585530e…

MALICIOUS

PDF

51.6 KB Created: 2020-08-19 14:44:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b7bfc43ff55be3afe1721e0ff5c6840e SHA-1: eb31b32b8aec8fb8aa36c9282cb0fe5d5d1186d4 SHA-256: fd70fc609585530ea830105dbae64f124b33289eb9b9d70623d8165a1b551b4d
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=score+hero+football+game'. The document body, though heavily obfuscated, also contains this URL, suggesting it's the primary lure. The PDF also exhibits characteristics of a link farm, with numerous external links, many pointing to Shopify domains, likely for SEO manipulation or to host further malicious content. The ML classifier strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://ttraff.cc/pify?keyword=score+hero+football+game
    • http://files.ruralnevadanews.com/uploads/1/3/2/7/132710780/d787f98c.pdf
    • http://zakabox.extratimeconcierge.com/uploads/1/3/0/7/130775565/fc095a32a7.pdf
    • http://files.pnmassoc.com/uploads/1/3/1/3/131381658/1846015.pdf
    • http://files.shadeoftuba.com/uploads/1/3/1/8/131871659/4058afb.pdf
    • http://files.organicpositivity.com/uploads/1/3/0/7/130775002/tusavub.pdf
    • https://cdn.shopify.com/s/files/1/0432/4874/6651/files/3_month_workout_plan_to_lose_weight.pdf
    • https://cdn.shopify.com/s/files/1/0435/6282/7935/files/risk_assessment_heat_map_template_excel.pdf
    • https://cdn.shopify.com/s/files/1/0438/0898/1152/files/badulifaba.pdf
    • https://cdn.shopify.com/s/files/1/0431/9923/4203/files/poboxosamegigiru.pdf
    • https://cdn.shopify.com/s/files/1/0432/5058/1662/files/womodopoxip.pdf
    • https://cdn.shopify.com/s/files/1/0431/5247/4267/files/nevexedezomoxilub.pdf
    • https://cdn.shopify.com/s/files/1/0431/2032/8864/files/rovagosopesexes.pdf
    • https://cdn.shopify.com/s/files/1/0433/2807/7992/files/85555434467.pdf
    • https://cdn.shopify.com/s/files/1/0427/7560/9510/files/tenazutugunumadogu.pdf
    • https://cdn.shopify.com/s/files/1/0429/5963/4591/files/70640738771.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vunazazaxukatokezidabu.pdf
    • https://cdn.shopify.com/s/files/1/0428/2518/7491/files/vetirotomorezi.pdf
    • https://cdn.shopify.com/s/files/1/0432/8567/6192/files/kunuz.pdf
    • https://cdn.shopify.com/s/files/1/0431/8884/6753/files/84536879521.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000787f.bin
c6acebe3750ab55c09714fa1b34f6c70ddae3ce202e1a088ffcbc34adab53285		 pdf-font-stream PDF embedded font (sfnt) at offset 0x787F 6588 bytes
font_01_sfnt_off000088f9.bin
3676c258d4e3eaeee2a519a8998f8de13a4b8b09ffbfcc856b1f6aa47ee336aa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x88F9 5360 bytes
font_02_sfnt_off00009b07.bin
0daf7f075c3f88460a7d2f6845d4613ffd1b02a5c5f8a1b1fe659a5ffbfc8241		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9B07 11024 bytes

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