Malicious PDF — malware analysis report

Static analysis result for SHA-256 94c5fbf078046456…

MALICIOUS

PDF

46.1 KB Created: 2020-08-24 23:17:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e63f367cbbc88bacd9359d88c17a7d73 SHA-1: 96f94c6a585b01ee7f5e040baf8a3da2e71aeda5 SHA-256: 94c5fbf0780464563eb8aa46c2c82ddc88a716bada345f13fb033995107e68f8
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a link farm and a specific malicious redirector URL, suggesting a phishing or malware distribution attempt. The document body, though corrupted, contains text related to an 'answer key', which is a common lure. The primary malicious URL identified is https://ttraff.ru/pify?keyword=answer+key+up+police+2018+morning+shift, which is likely used to redirect the user to a harmful site.

Heuristics 4

  • 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.
  • 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://ttraff.ru/pify?keyword=answer+key+up+police+2018+morning+shift
    • http://files.foundationfirsthorsemanship.com/uploads/1/3/1/6/131636642/4296050.pdf
    • https://cdn.shopify.com/s/files/1/0430/3290/3829/files/whatsapp_ke_video_karna_hai.pdf
    • https://cdn.shopify.com/s/files/1/0428/0451/0887/files/copernicus_revolution.pdf
    • https://cdn.shopify.com/s/files/1/0438/5194/0000/files/yulgang_global_mobile_guide.pdf
    • https://cdn.shopify.com/s/files/1/0431/8684/7903/files/85535935006.pdf
    • https://cdn.shopify.com/s/files/1/0431/3019/2039/files/ca_ipcc_gst_amendments_for_nov_2020_download.pdf
    • https://cdn.shopify.com/s/files/1/0437/4285/5319/files/kukiz.pdf
    • https://cdn.shopify.com/s/files/1/0431/2812/7654/files/36382321143.pdf
    • https://cdn.shopify.com/s/files/1/0437/4190/5050/files/wenugikemedirubaf.pdf
    • https://cdn.shopify.com/s/files/1/0430/1763/3949/files/sodiremajuwivudovinidetes.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_off00005a90.bin
e22e124131af99ec6d107ca7c021ed253d3a6266ab8dc83934b615478295acf6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A90 5988 bytes
font_01_sfnt_off00006eec.bin
e7e7edeb72acdb7057e422ad1a6785517abff74a8c33ed55fc1593787eb01ed0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6EEC 10076 bytes
font_02_sfnt_off00009194.bin
c22ebb94c29709220397f192544a12af3e1268adcbb8d3ce89678cdb3374c9c8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9194 7676 bytes

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