Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ecbaf9fffb5d677…

MALICIOUS

PDF

62.2 KB Created: 2020-08-31 04:41:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5237de001d507d78b309a24eaddd592d SHA-1: 7abe77cd469aa8db6ac70c2ae7ba726e684f7a75 SHA-256: 9ecbaf9fffb5d677c8313156a90735f2e0da497d2a845a6dbb15da8bac7267be
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.com/wix?keyword=photosynthesis+lesson+plans+high+school'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, with the primary one being 'https://cdn.shopify.com/s/files/1/0437/9338/3585/files/pidujifunezulakuj.pdf'. The document body, though heavily corrupted, contains fragments that suggest an attempt to disguise the malicious link as educational material.

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.com/wix?keyword=photosynthesis+lesson+plans+high+school
    • https://cdn.shopify.com/s/files/1/0437/9338/3585/files/pidujifunezulakuj.pdf
    • https://cdn.shopify.com/s/files/1/0434/1540/4711/files/general_cable_catalogue.pdf
    • https://cdn.shopify.com/s/files/1/0434/0878/5562/files/87986469086.pdf
    • https://cdn.shopify.com/s/files/1/0439/4716/3806/files/chaupai_sahib_steek.pdf
    • https://cdn.shopify.com/s/files/1/0431/5820/8674/files/doxixunufevigibuwivi.pdf
    • https://cdn.shopify.com/s/files/1/0434/4496/1446/files/vewagitosojegoxoz.pdf
    • https://cdn.shopify.com/s/files/1/0431/8681/5139/files/anonymous_hacker_pic.pdf
    • https://cdn.shopify.com/s/files/1/0430/7540/3929/files/worapa.pdf
    • https://cdn.shopify.com/s/files/1/0445/7604/7263/files/animales_en_peligro_de_extincion_en_peru.pdf
    • https://cdn.shopify.com/s/files/1/0435/1400/3610/files/ishihara_color_blindness_test_38_plates.pdf
    • https://cdn.shopify.com/s/files/1/0431/7003/7924/files/farazoxilomekejewij.pdf
    • https://cdn.shopify.com/s/files/1/0435/8628/9832/files/soribaxoravovivu.pdf
    • https://cdn.shopify.com/s/files/1/0434/2287/5797/files/wuvavalewogewipipuzi.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_off0000a7e3.bin
2fd439039f39f96279b02c8ce671005d27772ed633c4786f3b82c33b505bc5e6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA7E3 4992 bytes
font_01_sfnt_off0000b8d2.bin
65f50e2c243aba38f4ad6d63284d0a9ad0b7144678a1d76cab14e86977e986a2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB8D2 10992 bytes
font_02_sfnt_off0000de14.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDE14 4324 bytes

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