Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d7195c67a886f70…

MALICIOUS

PDF

56.0 KB Created: 2020-08-11 19:32:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8e383624d435612a247581a4ce42da1a SHA-1: 88d7de78319cd656763227ec94ba8ab1a4875e49 SHA-256: 7d7195c67a886f70596f015c2145bcfa414be3f3fa276da9f3b62ec6ee3f291e
128 Risk Score

Malware Insights

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

The PDF file contains embedded JavaScript and links to a known malicious redirector. The document body text, though partially corrupted, includes a lure related to 'Acta constitutiva de una empresa formato pdf' and the primary URL points to a redirector that likely serves malicious content. The presence of numerous external PDF links suggests a link farm or SEO poisoning tactic to distribute the malicious payload.

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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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=acta+constitutiva+de+una+empresa+formato+pdf
    • http://files.hamptonsgarage.com.au/uploads/1/3/1/8/131871739/vivunemefeluzeti.pdf
    • http://files.oregonepermitting.com/uploads/1/3/1/4/131453193/2326286.pdf
    • http://files.nelecreativegroup.com/uploads/1/3/0/8/130814169/2360623.pdf
    • http://files.sheeshees.com/uploads/1/3/1/4/131437949/3851781.pdf
    • https://cdn.shopify.com/s/files/1/0433/5196/5855/files/xevof.pdf
    • https://cdn.shopify.com/s/files/1/0436/5461/1102/files/zetunoxawadazuxifesip.pdf
    • https://cdn.shopify.com/s/files/1/0428/2449/9367/files/jukapal.pdf
    • https://cdn.shopify.com/s/files/1/0436/4461/6864/files/pukisi.pdf
    • https://cdn.shopify.com/s/files/1/0437/5517/6097/files/abigail_adams_remember_the_ladies.pdf
    • https://cdn.shopify.com/s/files/1/0428/0261/0335/files/23691435239.pdf
    • https://cdn.shopify.com/s/files/1/0438/5406/9910/files/royalty_accounting_journal_entries.pdf
    • https://cdn.shopify.com/s/files/1/0433/5868/3295/files/67173152320.pdf
    • https://cdn.shopify.com/s/files/1/0433/5897/8207/files/zavuxilomivipomutipa.pdf
    • https://cdn.shopify.com/s/files/1/0439/8222/5566/files/sesudejedupi.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tuwaz.pdf
    • https://cdn.shopify.com/s/files/1/0430/6763/7922/files/faxaliruxemurukezizexat.pdf
    • https://cdn.shopify.com/s/files/1/0432/2253/2251/files/different_types_of_capacitors_and_their_uses.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_off0000997d.bin
4995d211c766583b06d675b912c14e0707c313858b143eec5f1a862f40579e59
pdf-font-stream PDF embedded font (sfnt) at offset 0x997D 5316 bytes
font_01_sfnt_off0000ab7e.bin
2e8469e039b5bf688d6aa58c2406e4fb9515efdcaf050d8a71f091a89cdd1348
pdf-font-stream PDF embedded font (sfnt) at offset 0xAB7E 11696 bytes