Malicious PDF — malware analysis report

Static analysis result for SHA-256 4489ffc944a929a0…

MALICIOUS

PDF

39.7 KB Created: 2020-08-31 00:08:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 675a9d93be00589c6454fa47b371a363 SHA-1: 70acd1f7c2b1cfa9b3dcb575c59df3bd5b448424 SHA-256: 4489ffc944a929a00243e42940c41e5c8d3a77e75cea8c5432f13be05d0e0db2
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, specifically pointing to 'https://ttraff.ru/wix?keyword=how+to+download+street+legal+racing+redline'. This URL is presented within the document body, disguised as a link to download a game. The PDF also exhibits characteristics of a link farm, with numerous external links, including one to 'https://cdn.shopify.com/s/files/1/0463/0675/4717/files/gugibulaz.pdf'. The primary attack vector appears to be social engineering through a deceptive link.

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/wix?keyword=how+to+download+street+legal+racing+redline
    • https://cdn.shopify.com/s/files/1/0463/0675/4717/files/gugibulaz.pdf
    • https://cdn.shopify.com/s/files/1/0438/9617/6795/files/46645595440.pdf
    • https://cdn.shopify.com/s/files/1/0440/3698/0886/files/4403357199.pdf
    • https://cdn.shopify.com/s/files/1/0431/8206/3778/files/coordinate_plane_notes.pdf
    • https://cdn.shopify.com/s/files/1/0434/8461/0712/files/biosynthesis_of_bacterial_cell_wall.pdf
    • https://static.usrfiles.com/ugd/5b9a87_0c5cecba83024cbb96427a8fe5e6b149.pdf
    • https://static.usrfiles.com/ugd/01bc73_aa451dba6cba4cb793708f11a1b71e18.pdf
    • https://static.usrfiles.com/ugd/80bfa9_08aed59efa5c42f5b2ab775144e7a80a.pdf
    • https://cdn.shopify.com/s/files/1/0432/9488/4000/files/contact_us_form_html_template.pdf
    • https://cdn.shopify.com/s/files/1/0429/5560/4134/files/3101293270.pdf
    • https://cdn.shopify.com/s/files/1/0431/1495/4908/files/49636085445.pdf
    • https://cdn.shopify.com/s/files/1/0437/9269/5456/files/kuzagufonuvumefosawazonaz.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mijafovaginidobu.pdf
    • https://cdn.shopify.com/s/files/1/0451/5692/5594/files/dawood_hercules_annual_report_2017.pdf
    • https://cdn.shopify.com/s/files/1/0432/1234/1409/files/kejuvapiroxifobawowuguw.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://cdn.shopify.com/s/files/1/0432/1234/1409/files/kejuvapiroxifobawowu

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005c92.bin
ee8e3ecc012898f1d79cf5968ebfdec8111743cfa1b685307e904e6de8a3bb97
pdf-font-stream PDF embedded font (sfnt) at offset 0x5C92 5160 bytes
font_01_sfnt_off00006e3b.bin
8e02384379111fdc5905aa4d255b024d347f4e8597d42889d92cacfacdd0913e
pdf-font-stream PDF embedded font (sfnt) at offset 0x6E3B 10508 bytes