Malicious PDF — malware analysis report

Static analysis result for SHA-256 db260ac9870f31eb…

MALICIOUS

PDF

36.6 KB Created: 2020-08-15 07:53:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 774a398b8c343e5fe5100d38455cc962 SHA-1: 985974a29f51206e8ff56d1dde088e2efe880852 SHA-256: db260ac9870f31eb067234927c7f9e9420c1aa3ae8c47cea3c2db86a793af01f
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external PDF files, suggesting a link farm for SEO manipulation or to obscure malicious redirects. The primary malicious indicator is the embedded URL 'https://ttraff.ru/pify?keyword=brother+louie+lyrics', which is flagged as a known malicious redirector. The document body, though heavily obfuscated, also contains this URL and other PDF links, reinforcing the attack pattern.

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=brother+louie+lyrics
    • http://files.kinbasketlakeresort.com/uploads/1/3/2/6/132681949/1684a3a.pdf
    • http://xajaxe.designsbysarahmeyer.com/uploads/1/3/1/3/131398539/52a75.pdf
    • http://files.tiffanynewman.net/uploads/1/3/1/4/131453506/kelamejifizotarige.pdf
    • http://jiguxawip.focused-fitness.com/uploads/1/3/1/3/131383483/26d4ae139700.pdf
    • http://files.companionanimalnorfolk.com/uploads/1/3/1/6/131607522/e971d6796786443.pdf
    • https://cdn.shopify.com/s/files/1/0438/0803/0882/files/the_myth_of_er.pdf
    • https://cdn.shopify.com/s/files/1/0434/9585/0150/files/steel_structure_company_profile.pdf
    • https://cdn.shopify.com/s/files/1/0440/8157/8136/files/35925848257.pdf
    • https://cdn.shopify.com/s/files/1/0437/7106/8577/files/24529926408.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/39858795743.pdf
    • https://cdn.shopify.com/s/files/1/0436/6447/4262/files/33701626364.pdf
    • https://cdn.shopify.com/s/files/1/0438/1612/4576/files/afl_fixtures_2020.pdf
    • https://cdn.shopify.com/s/files/1/0450/9263/4789/files/anosmia_adalah.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/51025654711.pdf
    • https://cdn.shopify.com/s/files/1/0434/7474/7558/files/2008_ford_escape_manual.pdf
    • https://cdn.shopify.com/s/files/1/0432/4684/6107/files/zazos.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_off00004756.bin
9e07423941ad21a7673c05b6fee6c83d3d7a54fad628c006f0523a9c3142b9be
pdf-font-stream PDF embedded font (sfnt) at offset 0x4756 4604 bytes
font_01_sfnt_off00005720.bin
dfb77525e7303c15f0173c0f038019a9f74a52a4d5bfb2d7aced5ded7c473bdd
pdf-font-stream PDF embedded font (sfnt) at offset 0x5720 9600 bytes
font_02_sfnt_off00007779.bin
7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71
pdf-font-stream PDF embedded font (sfnt) at offset 0x7779 4324 bytes