Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d4583f59047232b…

MALICIOUS

PDF

43.4 KB Created: 2020-08-22 17:43:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a801da3dd20f07f299afb78ad9bd3036 SHA-1: a3bb6bbee6459a1f7c58dd2c8a63775087f6f333 SHA-256: 9d4583f59047232b02663bd18eb4eb3a94af4d1aa5eb7879d6e9892303eb7ac6
150 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text suggesting a lure related to 'predictive analytics in hr pdf'. The presence of a link farm and a malicious redirector indicates an attempt to lead the user to a malicious site, likely for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=predictive+analytics+in+hr+pdf
    • http://files.1201third.com/uploads/1/3/1/4/131483154/kapudomelotuj-nasumalu-zusij-nuludavavedev.pdf
    • http://xowofid.stevenlarose.com/uploads/1/3/2/7/132740405/31207ae695.pdf
    • https://cdn.shopify.com/s/files/1/0433/3862/9270/files/wawebesidanefu.pdf
    • https://cdn.shopify.com/s/files/1/0431/8917/4432/files/xidezatesofepudor.pdf
    • https://cdn.shopify.com/s/files/1/0430/1769/9477/files/11103027202.pdf
    • https://cdn.shopify.com/s/files/1/0429/5232/7324/files/97953027001.pdf
    • https://cdn.shopify.com/s/files/1/0434/6265/6157/files/carnival_of_souls_1998.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/logopazunu.pdf
    • https://cdn.shopify.com/s/files/1/0429/6392/7206/files/waxob.pdf
    • https://cdn.shopify.com/s/files/1/0436/0273/9362/files/pumogakanelowelizabu.pdf
    • https://cdn.shopify.com/s/files/1/0439/0980/8280/files/39244067628.pdf
    • https://cdn.shopify.com/s/files/1/0431/2684/9700/files/story_map_diagram.pdf
    • https://cdn.shopify.com/s/files/1/0437/0032/2458/files/58732427781.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_off00006a29.bin
c54d0fa34163021aaf80dab75c73db5c903c5f0a0ef2af1e20ed8b82350820e5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A29 5404 bytes
font_01_sfnt_off00007c8b.bin
a12abff4c52d97d8f45be647faf4e703af4821b3e3473b9d18acbe7f38efcc41		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C8B 10776 bytes

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