Malicious PDF — malware analysis report

Static analysis result for SHA-256 803e107a69b75a03…

MALICIOUS

PDF

44.1 KB Created: 2020-08-12 13:47:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7b3722956bb42717c0fe3a11f3f02eb9 SHA-1: d1c7948a54cac8141205c64c376b8d2d70fb7736 SHA-256: 803e107a69b75a030ca2237d80e9b0280bab7e53b50daed1cfa2ebbad97a478a
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to Shopify domains hosting seemingly benign PDF files. However, one critical link redirects to 'ttraff.com', a known malicious redirector. This suggests the document is designed to funnel users through a series of links, ultimately leading them to malicious infrastructure. The presence of numerous links and the redirection to a known malicious domain strongly indicate a phishing or credential harvesting attempt.

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/pify?keyword=bacterias+gram+negativas+aerobias+pdf
    • http://files.covertscales.com/uploads/1/3/1/3/131379443/9097a19942b.pdf
    • http://files.customcellardesign.com/uploads/1/3/1/1/131164308/goxevifawogiluz.pdf
    • http://rubodosib.nardamohammed.com/uploads/1/3/0/7/130776757/narimujubagolisivi.pdf
    • https://cdn.shopify.com/s/files/1/0434/1710/8642/files/84681364358.pdf
    • https://cdn.shopify.com/s/files/1/0433/4357/7256/files/nisasi.pdf
    • https://cdn.shopify.com/s/files/1/0435/6957/8147/files/scarlet_letter_study_guides.pdf
    • https://cdn.shopify.com/s/files/1/0434/4964/7271/files/munanetukarad.pdf
    • https://cdn.shopify.com/s/files/1/0434/2641/4748/files/62861438182.pdf
    • https://cdn.shopify.com/s/files/1/0431/8520/9506/files/download_asme_section_viii_division_1.pdf
    • https://cdn.shopify.com/s/files/1/0432/3013/4427/files/20912242639.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/91960476686.pdf
    • https://cdn.shopify.com/s/files/1/0431/7256/1050/files/34288459079.pdf
    • https://cdn.shopify.com/s/files/1/0431/4890/2560/files/archaic_words_dictionary.pdf
    • https://cdn.shopify.com/s/files/1/0431/4451/1645/files/corel_draw_x6_tutorials_for_beginners.pdf
    • https://cdn.shopify.com/s/files/1/0435/6079/6318/files/xipozet.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_off000060f7.bin
caa9a33f075cb7e99013fb3c4b49a663ed24e870ef54c1620fac4d963e06d51e
pdf-font-stream PDF embedded font (sfnt) at offset 0x60F7 5480 bytes
font_01_sfnt_off0000737f.bin
7a8a239e0ad8a3eb2945db30c191780315a8efb9435a06e4d1d6bfab6a33c30b
pdf-font-stream PDF embedded font (sfnt) at offset 0x737F 9908 bytes
font_02_sfnt_off0000956e.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333
pdf-font-stream PDF embedded font (sfnt) at offset 0x956E 4324 bytes