Malicious PDF — malware analysis report

Static analysis result for SHA-256 3530e54f2abb5997…

MALICIOUS

PDF

43.9 KB Created: 2020-08-11 22:55:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 600214d29ea2d74c0af3db7558021bb1 SHA-1: 458800b4e33b4564eadb69f8960caadc4e21fa74 SHA-256: 3530e54f2abb59974aee3d2abe453164e27cb3e43c7f17f0f1431107753501fa
120 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, identified as a link farm, that redirect to malicious infrastructure. The primary malicious URL is https://ttraff.ru/pify?keyword=various+types+of+communication+pdf, which is a known redirector. The document body, though heavily obfuscated, contains text related to communication and the wkhtmltopdf tool, suggesting a lure to disguise the malicious links. No scripts were extracted, and the attack relies solely on the embedded malicious links.

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/pify?keyword=various+types+of+communication+pdf
    • http://gobudova.mckeemovers.com/uploads/1/3/0/9/130969744/lofaludopunowanose.pdf
    • http://lafana.paratutor.com/uploads/1/3/0/8/130874429/jegogo-bifomijobexev-gemuveterepejuv-gameruw.pdf
    • http://lemav.visionary-affairs.com/uploads/1/3/1/3/131380505/kivowetoj-girofom-tadiritovemob.pdf
    • http://files.stergioschatzikyriakidis.com/uploads/1/3/1/0/131070538/veseferunedod.pdf
    • http://xesugoxaz.economicthinkers.com/uploads/1/3/0/7/130738732/zobopip-wafetenom-xogekobematijeb-zemaralizu.pdf
    • https://cdn.shopify.com/s/files/1/0431/4637/9426/files/58740569581.pdf
    • https://cdn.shopify.com/s/files/1/0430/0223/2983/files/93234490286.pdf
    • https://cdn.shopify.com/s/files/1/0429/4007/2092/files/pezatidinakilopuvosumop.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/69298849274.pdf
    • https://cdn.shopify.com/s/files/1/0435/1941/0335/files/douce_dame_jolie.pdf
    • https://cdn.shopify.com/s/files/1/0430/1009/7313/files/botejonowebi.pdf
    • https://cdn.shopify.com/s/files/1/0430/2707/1130/files/mivawadegujifegirevuvij.pdf
    • https://cdn.shopify.com/s/files/1/0437/8407/7473/files/taxivosad.pdf
    • https://cdn.shopify.com/s/files/1/0435/9458/0136/files/prey_television_series.pdf
    • https://cdn.shopify.com/s/files/1/0431/5850/3573/files/95738698512.pdf
    • https://cdn.shopify.com/s/files/1/0429/5157/3657/files/set_java_home_ubuntu.pdf
    • https://cdn.shopify.com/s/files/1/0429/6946/4991/files/48175698387.pdf
    • https://cdn.shopify.com/s/files/1/0429/4544/6044/files/sezuz.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_off00006dc3.bin
97b8822d16b616601231281b458189168292125c75ad65bb1124c6087d8fa06a
pdf-font-stream PDF embedded font (sfnt) at offset 0x6DC3 5336 bytes
font_01_sfnt_off00007fe4.bin
51cb211fc24d0a9cb618ddb69f6954c5b662c124829a41198a8dbe25e1177247
pdf-font-stream PDF embedded font (sfnt) at offset 0x7FE4 10188 bytes