Malicious PDF — malware analysis report

Static analysis result for SHA-256 9fcf8ab86115460e…

MALICIOUS

PDF

52.9 KB Created: 2020-08-22 13:45:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 11cac2b2e014c336079a914c874df3b6 SHA-1: 4fab95a8b7f9d456cd50c2c7eeac6045a4e6c61a SHA-256: 9fcf8ab86115460e53375fb39735611b6bd029811a9e8ffa08d45066b605dcb6
140 Risk Score

Malware Insights

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

The PDF contains a lure impersonating cloud document sharing services, specifically mentioning Smartsheet HR templates. It embeds a link to a known malicious redirector, ttraff.com, which is designed to lead users to further malicious content. The PDF also contains a large number of external links, many hosted on Shopify, likely part of a link farm to improve SEO for malicious content.

Heuristics 4

  • 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.
  • Cloud document impersonation lure medium SE_CLOUD_DOC_LURE
    Document impersonates a cloud file-sharing service such as SharePoint, OneDrive, Google Drive, Dropbox, Box, or Microsoft 365 and asks the user to open, verify, or access a shared document
  • 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/pify?keyword=smartsheet+hr+templates
    • http://files.sarahjebian.com/uploads/1/3/0/8/130873717/1638041.pdf
    • http://jotenar.shopkashkoutureko.com/uploads/1/3/0/8/130874222/loduwaw-jurazofuzigab-papudidavuzej-munuluwipinowa.pdf
    • https://cdn.shopify.com/s/files/1/0434/6707/9830/files/gokuzujanotufimabivageno.pdf
    • https://cdn.shopify.com/s/files/1/0435/5771/6117/files/winiwugosejixisemuroxinu.pdf
    • https://cdn.shopify.com/s/files/1/0433/1352/8987/files/fodefakexogefagomijapa.pdf
    • https://cdn.shopify.com/s/files/1/0432/2358/0830/files/79394584316.pdf
    • https://cdn.shopify.com/s/files/1/0429/0609/1687/files/ledatinumakudope.pdf
    • https://cdn.shopify.com/s/files/1/0433/8424/2337/files/kabumufit.pdf
    • https://cdn.shopify.com/s/files/1/0432/3262/4797/files/59433020780.pdf
    • https://cdn.shopify.com/s/files/1/0440/8174/1976/files/47905623109.pdf
    • https://cdn.shopify.com/s/files/1/0447/2753/3724/files/kelodumesulujunevumudevo.pdf
    • https://cdn.shopify.com/s/files/1/0432/5657/8212/files/80648116967.pdf
    • https://cdn.shopify.com/s/files/1/0432/5575/9011/files/29427367862.pdf
    • https://cdn.shopify.com/s/files/1/0428/0470/7491/files/62468176780.pdf
    • https://cdn.shopify.com/s/files/1/0436/6922/5625/files/22141039694.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_off00007ced.bin
5008ba121b4709ec7cba5eecfe85192c24dc29b1b1131398222cb7f6c50de671
pdf-font-stream PDF embedded font (sfnt) at offset 0x7CED 5160 bytes
font_01_sfnt_off00008e47.bin
dabc93a02f4afabc60c374548026ec78deaff5e069207c29d8e97e22cbe49e1f
pdf-font-stream PDF embedded font (sfnt) at offset 0x8E47 10144 bytes
font_02_sfnt_off0000b0fa.bin
54db19bc5bc3a890ba01298b66c21f32fdd4ac86096cd0952f2ff0e666f8156b
pdf-font-stream PDF embedded font (sfnt) at offset 0xB0FA 16280 bytes