Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6de1d546e25e635…

MALICIOUS

PDF

49.3 KB Created: 2020-07-28 10:25:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4901b91efa1472efebb738ff4bcad208 SHA-1: e83e533bbd3887b4196420b90458a4d036e26a6d SHA-256: c6de1d546e25e63548600f8115c5b305cd5fc50d7c54dbed47ae158cf2ebde0d
128 Risk Score

Malware Insights

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

The PDF file contains heuristics indicating it is a malicious redirector and a link farm, disguised as a property inventory report. The primary malicious link, https://ttraff.ru/pify?keyword=property+inventory+report+sample, is designed to redirect users to further malicious content. The document body, though heavily obfuscated, contains keywords related to reports and invoices, supporting the lure.

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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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=property+inventory+report+sample
    • http://files.aflakmjarah.com/uploads/1/3/1/3/131379320/gipililekun.pdf
    • http://files.joycedonahuelive.com/uploads/1/3/1/0/131070112/bugaj-zewaporukojis-fakekamozekomi-jifivogosara.pdf
    • http://files.thelambranch.com/uploads/1/3/0/7/130776081/680f0.pdf
    • http://files.joycedonahuelive.com/uploads/1/3/1/0/131070112/bugaj-zewaporukojis-fakekamozekomi-
    • https://cdn.shopify.com/s/files/1/0434/8788/7526/files/siloteniravupinakanulub.pdf
    • https://cdn.shopify.com/s/files/1/0433/0926/9156/files/83110428782.pdf
    • https://cdn.shopify.com/s/files/1/0435/8730/5629/files/ziwomebuxuxewobajelifuvek.pdf
    • https://cdn.shopify.com/s/files/1/0434/3542/5944/files/15572458826.pdf
    • https://cdn.shopify.com/s/files/1/0431/5247/4280/files/semobulexakanuguneg.pdf
    • https://cdn.shopify.com/s/files/1/0440/2796/9686/files/towovonalujujonibos.pdf
    • https://cdn.shopify.com/s/files/1/0430/7910/6724/files/pekek.pdf
    • https://cdn.shopify.com/s/files/1/0435/5552/0667/files/fesafomen.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/55079075607.pdf
    • https://cdn.shopify.com/s/files/1/0435/1374/1472/files/sawoxejuseva.pdf
    • https://cdn.shopify.com/s/files/1/0430/8090/8949/files/gameliwawi.pdf
    • https://cdn.shopify.com/s/files/1/0429/1851/0745/files/9987810130.pdf
    • https://cdn.shopify.com/s/files/1/0432/6519/6197/files/39490790042.pdf
    • https://cdn.shopify.com/s/files/1/0433/9911/9013/files/5610167920.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_off000083f2.bin
c7536c17750033417b078f513129b9f403d27f7914234f75a724ae9e85929e89
pdf-font-stream PDF embedded font (sfnt) at offset 0x83F2 4916 bytes
font_01_sfnt_off0000948d.bin
bf45f0c26672da4a00fe25bbea4fa06bdc579112c6493bc82a318f90a019be97
pdf-font-stream PDF embedded font (sfnt) at offset 0x948D 10284 bytes