Malicious PDF — malware analysis report

Static analysis result for SHA-256 8bba7d241dba5073…

MALICIOUS

PDF

38.7 KB Created: 2020-09-09 10:29:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5ca06881e61e732a5ee90caea2eff6db SHA-1: 8403a5cef6e440129dd6b852852b4926311ffdb8 SHA-256: 8bba7d241dba5073a67caa05dd8ee21f198d07bb15e501c657d93c8bcc1d4212
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, which is also present in the document body. The file also exhibits characteristics of a link farm, with numerous embedded URLs pointing to external PDF files. The primary malicious URL, https://ttraff.link/wix?keyword=cuestionario+de+auditoria+informatica+pdf, is likely intended to redirect the user to a phishing or malware distribution site.

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.link/wix?keyword=cuestionario+de+auditoria+informatica+pdf
    • https://cdn.shopify.com/s/files/1/0435/6194/3199/files/waring_pro_deep_fryer.pdf
    • https://cdn.shopify.com/s/files/1/0433/6310/6968/files/42704223080.pdf
    • https://cdn.shopify.com/s/files/1/0440/9245/7112/files/he_andado_muchos_caminos_antonio_mac.pdf
    • https://cdn.shopify.com/s/files/1/0462/9538/4225/files/guidelines_for_treatment_of_pneumonia_in_pediatrics.pdf
    • https://cdn.shopify.com/s/files/1/0434/6268/8918/files/99116026340.pdf
    • https://cdn.shopify.com/s/files/1/0436/7728/6553/files/wedding_invitation_template_microsoft_word.pdf
    • https://cdn.shopify.com/s/files/1/0436/9242/5384/files/gorogumivubino.pdf
    • https://cdn.shopify.com/s/files/1/0438/2828/1506/files/jiwarizijepubiromex.pdf
    • https://cdn.shopify.com/s/files/1/0430/8900/2645/files/remove_security_from_online.pdf
    • https://cdn.shopify.com/s/files/1/0430/9378/6791/files/85513215109.pdf
    • https://cdn.shopify.com/s/files/1/0434/7609/1032/files/50670674928.pdf
    • https://cdn.shopify.com/s/files/1/0437/8089/8973/files/3504264280.pdf
    • https://cdn.shopify.com/s/files/1/0433/3908/8027/files/93243458469.pdf
    • https://cdn.shopify.com/s/files/1/0440/9946/9464/files/tomb_of_annihilation_5e_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/5970/7037/files/bijabux.pdf
    • https://cdn.shopify.com/s/files/1/0438/1986/0125/files/jainism_symbol.pdf
    • https://cdn.shopify.com/s/files/1/0428/3046/3135/files/zerizidomirujidogazes.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_off00004bc2.bin
8e087eacba17b7ae6f02668c6275d42e824e45fe5d0f0c88ddeb5815654237d9
pdf-font-stream PDF embedded font (sfnt) at offset 0x4BC2 5172 bytes
font_01_sfnt_off00005d3f.bin
54f8c48e769fdf681fb0cc6ab24f7fbc71b8d5e97abdda1ac7ae993737625afc
pdf-font-stream PDF embedded font (sfnt) at offset 0x5D3F 10472 bytes
font_02_sfnt_off00007f59.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e
pdf-font-stream PDF embedded font (sfnt) at offset 0x7F59 4324 bytes