Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6c325155de84584…

MALICIOUS

PDF

43.0 KB Created: 2020-08-23 02:00:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3c10371256ca99e436d1d6df5f13098c SHA-1: 54faceb2184d07f460dfc31288b931ed994364c5 SHA-256: c6c325155de845843aaef73f5a0b944bace140978e197f40184f8806ef9a54da
120 Risk Score

Malware Insights

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

The PDF file contains a mass of external links, including one pointing to a known malicious redirector at ttraff.com. The document body, though heavily obfuscated, contains text that suggests it is a 'formal letter layout template', likely a lure to encourage clicks on the embedded malicious link. The presence of numerous PDF links, many hosted on Shopify, indicates a potential SEO-based distribution strategy. No scripts were extracted from this sample.

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.com/pify?keyword=formal+letter+layout+template
    • http://files.rochesterjiujitsu.com/uploads/1/3/1/3/131398134/vovin_zexojajakivewo.pdf
    • http://dedug.ambergolob.com/uploads/1/3/0/7/130739811/videjipeviripe.pdf
    • http://tufup.mysideofthecouch.com/uploads/1/3/0/8/130814161/2ced0a0e30822c.pdf
    • http://files.handhinsurance.net/uploads/1/3/1/4/131438539/mefezipopeke.pdf
    • http://files.ncmilitaryoutreach.com/uploads/1/3/0/7/130775953/4647936.pdf
    • https://cdn.shopify.com/s/files/1/0432/4913/9880/files/speaking_activities_esl_beginner.pdf
    • https://cdn.shopify.com/s/files/1/0434/6272/1688/files/arguably_by_christopher_hitchens.pdf
    • https://cdn.shopify.com/s/files/1/0428/2833/3219/files/xisurusu.pdf
    • https://cdn.shopify.com/s/files/1/0440/7446/7478/files/vulosodoti.pdf
    • https://cdn.shopify.com/s/files/1/0431/3487/7850/files/website_design_templates_sketch.pdf
    • https://cdn.shopify.com/s/files/1/0430/4040/7701/files/55559789909.pdf
    • https://cdn.shopify.com/s/files/1/0428/4419/2935/files/74138605306.pdf
    • https://cdn.shopify.com/s/files/1/0432/3767/1080/files/xapazugomafupan.pdf
    • https://cdn.shopify.com/s/files/1/0428/7689/5398/files/gw2_firebrand_pve_build.pdf
    • https://cdn.shopify.com/s/files/1/0439/4817/9611/files/samefuwar.pdf
    • https://cdn.shopify.com/s/files/1/0431/7049/6672/files/kagimaxevonidegopa.pdf
    • https://cdn.shopify.com/s/files/1/0432/7899/1513/files/anatomia_de_la_piel_y_anexos.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_off00006c71.bin
3752371520c7d6f86c6e06c94dd29eddf8f4ccf973a869ffd582e5647da2d53f
pdf-font-stream PDF embedded font (sfnt) at offset 0x6C71 4844 bytes
font_01_sfnt_off00007cd7.bin
6f53598f0449b53c4790cfa4fc556dbaaeeae570224631ebe1d155c844f10f64
pdf-font-stream PDF embedded font (sfnt) at offset 0x7CD7 9928 bytes