Malicious PDF — malware analysis report

Static analysis result for SHA-256 21d230b0b8fc1742…

MALICIOUS

PDF

39.2 KB Created: 2020-08-14 09:06:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 44245304e9d4be4aa366ad634b8b8ca9 SHA-1: 2474a4ba4773bf23e72a3016c6530e98f5cf653a SHA-256: 21d230b0b8fc174206a5f4e601260a5ef2aa32a5dacb72e97ae4c18de52e069a
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with one critical heuristic identifying a link to a known malicious redirector. The document body, though heavily obfuscated, contains text that appears to be a lure related to 'the triple agent joby warrick pdf' and includes the malicious redirector URL. The presence of a link farm suggests an attempt to distribute malicious content or SEO poisoning.

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.cc/wb?keyword=the%20triple%20agent%20joby%20warrick%20pdf
    • http://files.bigbandflorida.com/uploads/1/3/1/4/131408209/duvagelo-megexovilaji-mekeb-xinezegilobisog.pdf
    • http://files.jabramowitz.com/uploads/1/3/0/8/130874631/4717138.pdf
    • http://files.flypaperlit.com/uploads/1/3/1/3/131380723/6000537.pdf
    • https://cdn.shopify.com/s/files/1/0430/4273/4229/files/33459620832.pdf
    • https://cdn.shopify.com/s/files/1/0430/6167/4133/files/building_maintenance_checklist_template.pdf
    • https://cdn.shopify.com/s/files/1/0433/8178/4726/files/3ds_max_tutorials_beginners.pdf
    • https://cdn.shopify.com/s/files/1/0431/7102/0954/files/babuxofawizulizasafudozix.pdf
    • https://cdn.shopify.com/s/files/1/0429/8542/2997/files/vipulumibakatij.pdf
    • https://cdn.shopify.com/s/files/1/0435/0096/1947/files/satarezorerivoso.pdf
    • https://cdn.shopify.com/s/files/1/0432/3206/7748/files/63885382521.pdf
    • https://cdn.shopify.com/s/files/1/0430/6193/6282/files/fukovisederujosepe.pdf
    • https://cdn.shopify.com/s/files/1/0437/0392/6938/files/kifal.pdf
    • https://cdn.shopify.com/s/files/1/0427/5296/6812/files/65062565933.pdf
    • https://cdn.shopify.com/s/files/1/0431/9143/5422/files/fizobekasodezemedunusij.pdf
    • https://cdn.shopify.com/s/files/1/0431/3032/3095/files/fobadefetomarokizeta.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_off00005c4f.bin
d9050dd09860afab4d726373bc9ea0cf8668b6243114739505b99391cd70dcda
pdf-font-stream PDF embedded font (sfnt) at offset 0x5C4F 5664 bytes
font_01_sfnt_off00006f99.bin
977f4f7d37307c5f55281cac1df641d9d55250a20a55af30f48c02da96292e44
pdf-font-stream PDF embedded font (sfnt) at offset 0x6F99 9556 bytes