Malicious PDF — malware analysis report

Static analysis result for SHA-256 a87ab0748b99d4b3…

MALICIOUS

PDF

49.7 KB Created: 2020-07-08 18:01:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 92a58be5b09e190f11508d59dbb15bc1 SHA-1: 586baa2f46a821122c0ef3f0e9dc3c6b797d81f0 SHA-256: a87ab0748b99d4b3911c1fa50e1d59006048f06af5a335a09e6b526970b3c7ac
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external PDF files hosted on various domains. One prominent link, 'https://ttraff.com/wb?keyword=derecho%20civil%20mexicano%20contratos%20pdf', is identified as a malicious redirector. This suggests the document is part of a link farm or SEO poisoning campaign designed to direct users to malicious infrastructure.

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/wb?keyword=derecho%20civil%20mexicano%20contratos%20pdf
    • http://files.practicingmindfulness.org/uploads/1/3/1/4/131452794/lamikaxodibefag.pdf
    • http://files.pcochoir.com/uploads/1/3/0/7/130739658/xijofidipej.pdf
    • http://files.laviishluxxe.com/uploads/1/3/0/7/130775942/1a41a3f.pdf
    • http://files.usucbs.com/uploads/1/3/0/8/130873975/nifuzu.pdf
    • http://files.mgtconcepts.com/uploads/1/3/1/4/131453725/pipadejirivuvo_gazugubagaxux_fugaradonebo.pdf
    • http://files.patriciagodden.com/uploads/1/3/1/4/131483019/5adf2.pdf
    • http://files.redesignforwholefamilies.com/uploads/1/3/1/8/131857193/jowudakavesof-rusodisoton-zofokizubolas.pdf
    • http://files.jailhossrock.com/uploads/1/3/0/9/130969082/ae7ef06d31.pdf
    • http://files.ladiesinpigs.co.uk/uploads/1/3/1/1/131164252/tonus-tijetadubo.pdf
    • http://files.gatewaycommercemiami.com/uploads/1/3/1/6/131636914/1ea759.pdf
    • http://files.marriedmarks.com/uploads/1/3/2/8/132816158/wawezanuz-titun-resuta-ponupax.pdf
    • https://sopemivelazu.files.wordpress.com/2020/07/31928295985.pdf
    • https://sumavew.files.wordpress.com/2020/07/4605061459.pdf
    • https://narenuzur.files.wordpress.com/2020/06/4728773697.pdf
    • https://takekagikug.files.wordpress.com/2020/06/towezugidopagisos.pdf
    • https://revipob.files.wordpress.com/2020/06/9730141812.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rofan.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/86662201832.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/99289858455.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/
    • https://narenuzur.files.wordpress.com/202

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000082a5.bin
2a06844ab0d6e974c9531dd3b9634a06cb7565ebadc43420332ea584dd570109
pdf-font-stream PDF embedded font (sfnt) at offset 0x82A5 5312 bytes
font_01_sfnt_off0000948e.bin
30047a06a6ed5e3b89107a86bb1d7956b6f005c51e914348a65d42c361273f7e
pdf-font-stream PDF embedded font (sfnt) at offset 0x948E 11052 bytes