Malicious PDF — malware analysis report

Static analysis result for SHA-256 475131426fcd5a11…

MALICIOUS

PDF

37.8 KB Created: 2020-08-14 19:09:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7a62699fa821f4b950e08427ca283890 SHA-1: 23c90733959c60e19a48ddcced7f0d5b5a6914c0 SHA-256: 475131426fcd5a11ab2f373638c9f9a0c00ef4e159d99f9079bd9c4d2494d72a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious File

The PDF document uses a social engineering lure, presenting itself as a 'Poweredge r710 owner's manual' to trick users into clicking a link. This link, 'https://ttraff.ru/wb?keyword=poweredge%20r710%20owner's%20manual', is identified as a malicious redirector. The document also contains a large number of links to other PDFs hosted on Shopify, suggesting a link farm for SEO manipulation or to obscure the malicious redirector. No scripts were extracted, but the primary attack vector appears to be directing users to malicious infrastructure via a deceptive document.

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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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/wb?keyword=poweredge%20r710%20owner
    • http://files.leasidebowls.ca/uploads/1/3/1/3/131379223/2209193.pdf
    • http://files.ralflittle.com/uploads/1/3/1/4/131483108/lakeja-tewam-vuboramigusoge.pdf
    • http://kozutoga.ecriturestl.org/uploads/1/3/0/7/130775169/sepenijezegijopijo.pdf
    • http://files.nicolaheatharts.com/uploads/1/3/1/8/131856173/3665497.pdf
    • https://cdn.shopify.com/s/files/1/0430/8926/4794/files/gars-_3.pdf
    • https://cdn.shopify.com/s/files/1/0431/8992/8096/files/niwebojimejativu.pdf
    • https://cdn.shopify.com/s/files/1/0434/5430/0312/files/44438669707.pdf
    • https://cdn.shopify.com/s/files/1/0432/3937/5012/files/my_life_has_no_meaning.pdf
    • https://cdn.shopify.com/s/files/1/0429/3243/7158/files/xigepa.pdf
    • https://cdn.shopify.com/s/files/1/0429/1257/9747/files/fejon.pdf
    • https://cdn.shopify.com/s/files/1/0431/7069/3284/files/44256274420.pdf
    • https://cdn.shopify.com/s/files/1/0433/6625/2703/files/conjunction_definition_grammar.pdf
    • https://cdn.shopify.com/s/files/1/0448/4051/7792/files/add_path_to_bash_profile.pdf
    • https://cdn.shopify.com/s/files/1/0438/0193/6033/files/effects_of_early_pregnancy.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_off000050c4.bin
32040e7162a7e70326055983c1c6d33c16b09c40e621673692df9618186b8603
pdf-font-stream PDF embedded font (sfnt) at offset 0x50C4 5548 bytes
font_01_sfnt_off000063a9.bin
a59f4bf630e8147735ffd18bc7631b8e57147109ffd08ea4548edd90115d6de7
pdf-font-stream PDF embedded font (sfnt) at offset 0x63A9 12188 bytes