Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f971284a062bb08…

MALICIOUS

PDF

40.8 KB Created: 2020-08-22 21:44:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 949e62f22ad0acc323c6f0848f01f27a SHA-1: 2f53fde31d0bded67f29cb070afe7162744af5cd SHA-256: 9f971284a062bb0829585baf5b7c2b112fd72845de54836f94c8c48419714ea0
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to external PDF files hosted on various domains, suggesting a link farm for SEO manipulation or to obscure malicious redirects. One critical heuristic identified a direct link to a known malicious redirector, ttraff.cc, which is further obfuscated by a query parameter related to a 'Viber app free for android' lure. The document body contains garbled text but includes the malicious URL and several benign-looking URLs hosted on Shopify, likely part of the link farm. The primary intent appears to be directing users to malicious infrastructure through a deceptive download lure.

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.cc/pify?keyword=viber+app+free+for+android
    • http://tugajepid.tomorrowlandtshirtauthority.com/uploads/1/3/1/6/131606739/mogatilidiposis-pixorofazod.pdf
    • http://nubujubu.midwaybaptistnc.org/uploads/1/3/2/3/132303189/negogegopuma-duburijuxifur-piwadel-vekitege.pdf
    • http://pofepax.sjrls.org/uploads/1/3/0/8/130874219/gumot-jupifizawot-rexedefomijas.pdf
    • http://forexalo.answersformylife.com/uploads/1/3/2/7/132740954/vevuwukeseb-xezumipadodaboz.pdf
    • https://cdn.shopify.com/s/files/1/0439/6787/3182/files/mariposa_military_base.pdf
    • https://cdn.shopify.com/s/files/1/0428/5405/6095/files/nigger_owner_manual.pdf
    • https://cdn.shopify.com/s/files/1/0430/5174/5442/files/90227251197.pdf
    • https://cdn.shopify.com/s/files/1/0462/4380/7392/files/29849060204.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rejukimuvili.pdf
    • https://cdn.shopify.com/s/files/1/0430/6750/6849/files/demir.pdf
    • https://cdn.shopify.com/s/files/1/0430/1540/5725/files/fevedavulaw.pdf
    • https://cdn.shopify.com/s/files/1/0429/3538/6275/files/depuwaz.pdf
    • https://cdn.shopify.com/s/files/1/0428/5405/6092/files/95346392585.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/65105912314.pdf
    • https://cdn.shopify.com/s/files/1/0432/4645/2899/files/burnout_test.pdf
    • https://cdn.shopify.com/s/files/1/0436/1479/7981/files/all_information_hngu.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000063af.bin
b76c8e6c19bbf676963a705784e1f94d41b451b8f3449cbeb8704ec6c29e7806
pdf-font-stream PDF embedded font (sfnt) at offset 0x63AF 4932 bytes
font_01_sfnt_off0000747e.bin
57f7f87393220375ca677616be74265fd35eccf2ca3c9491f289845408256277
pdf-font-stream PDF embedded font (sfnt) at offset 0x747E 9980 bytes