Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb69abdaf256bfd5…

MALICIOUS

PDF

67.0 KB Created: 2020-08-21 13:10:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 505eab62a20e18cd238e222ff38bbc54 SHA-1: fd32cbd4e492a2b801c449bae2ec524b68bebb83 SHA-256: cb69abdaf256bfd520dcd2de7b865fae661cdd58e3c0aa0cf2cac0bb79e03a0b
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=health+canada+drinking+water+guidelines+turbidity'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, with the primary one being 'https://cdn.shopify.com/s/files/1/0437/9767/6192/files/asme_section_8_division_1.pdf'. The document body, though heavily obfuscated, contains these URLs, suggesting a lure to external content that ultimately leads 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.ru/pify?keyword=health+canada+drinking+water+guidelines+turbidity
    • http://files.thegreenoasis.ca/uploads/1/3/1/4/131406448/3ec2b.pdf
    • http://xigovib.counselor-adam.com/uploads/1/3/2/6/132681579/dd958a76c2.pdf
    • http://zurarefa.heartofgoldhedgehogs.com/uploads/1/3/1/4/131483371/dazezoposira.pdf
    • http://files.laurieolerich.com/uploads/1/3/1/8/131858661/puzofanefixud-lujaxizuvamasip-kisixidepurux.pdf
    • http://dorusewi.archercenter.org/uploads/1/3/1/8/131858419/4978102.pdf
    • https://cdn.shopify.com/s/files/1/0437/9767/6192/files/asme_section_8_division_1.pdf
    • https://cdn.shopify.com/s/files/1/0429/0386/3459/files/gogadegonerofiro.pdf
    • https://cdn.shopify.com/s/files/1/0438/6498/1664/files/is_roblox_on_xbox_360.pdf
    • https://cdn.shopify.com/s/files/1/0429/7926/2615/files/gomov.pdf
    • https://cdn.shopify.com/s/files/1/0432/3393/5515/files/zitepevajuxumedirovu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bixebor.pdf
    • https://cdn.shopify.com/s/files/1/0431/7567/4014/files/30494978992.pdf
    • https://cdn.shopify.com/s/files/1/0432/4609/2443/files/lutadikanegivowoka.pdf
    • https://cdn.shopify.com/s/files/1/0438/4751/6325/files/4036373786.pdf
    • https://cdn.shopify.com/s/files/1/0430/2176/2723/files/abbreviation_worksheet_for_grade_3.pdf
    • https://cdn.shopify.com/s/files/1/0440/0332/8150/files/2002_porsche_911_owners_manual.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_off0000c913.bin
f93e767dfeb0970d383dde6c35563970d56e9b8b25e735e42a36aed3c0c4fd5e
pdf-font-stream PDF embedded font (sfnt) at offset 0xC913 5560 bytes
font_01_sfnt_off0000dbf8.bin
17421579c79d2c27f4d9229a71975f4480da3c8991e900746f9823dc123b35dd
pdf-font-stream PDF embedded font (sfnt) at offset 0xDBF8 10236 bytes