Malicious PDF — malware analysis report

Static analysis result for SHA-256 48feb7f2c2277f9c…

MALICIOUS

PDF

64.7 KB Created: 2020-08-11 00:57:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b048139819dcb8ecf08e2b20b779b1a6 SHA-1: 89045ec2ad9c7e434722612c3887677e138c3335 SHA-256: 48feb7f2c2277f9c69f4ca57b16d228703b1d5a3b217be4a6214807ea517345c
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but the primary link directs to a malicious redirector at 'ttraff.ru'. This redirector is disguised with the keyword 'balanced scorecard kaplan pdf' to lure victims. The ML classifier strongly indicates maliciousness, and the PDF structure is consistent with SEO-based link farms used for traffic redirection and malware distribution.

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=balanced+scorecard+kaplan+pdf
    • http://files.mccullochsfitness.com/uploads/1/3/2/6/132695513/285403.pdf
    • http://files.texasshowcasecircuit.com/uploads/1/3/0/7/130739746/dfde2aa2169a2b1.pdf
    • http://files.keepanopenmind.net/uploads/1/3/0/8/130814642/354913.pdf
    • https://cdn.shopify.com/s/files/1/0430/9162/4096/files/5076062200.pdf
    • https://cdn.shopify.com/s/files/1/0433/6202/5624/files/wirikexewajuzazajevota.pdf
    • https://cdn.shopify.com/s/files/1/0435/1403/6376/files/pujubaruvaxonukojaluw.pdf
    • https://cdn.shopify.com/s/files/1/0432/5759/4011/files/luigi_s_mansion_rom.pdf
    • https://cdn.shopify.com/s/files/1/0431/0892/5602/files/rujar.pdf
    • https://cdn.shopify.com/s/files/1/0430/1894/4665/files/wuwowegavidipojemutowiw.pdf
    • https://cdn.shopify.com/s/files/1/0432/1515/9458/files/dameliw.pdf
    • https://cdn.shopify.com/s/files/1/0434/1222/6206/files/wepib.pdf
    • https://cdn.shopify.com/s/files/1/0437/1116/8664/files/23063664946.pdf
    • https://cdn.shopify.com/s/files/1/0434/3355/8182/files/zowuvari.pdf
    • https://cdn.shopify.com/s/files/1/0430/5109/0071/files/ninop.pdf
    • https://cdn.shopify.com/s/files/1/0431/4107/1016/files/6118165219.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/silekizezimepajetidomok.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_off0000bfb2.bin
b28c6fa4fe336b9b1bf464ddf0ed936c4cd8722d2c295875bc58bb52ba3b1427		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBFB2 5260 bytes
font_01_sfnt_off0000d19f.bin
0bca4b71f86cba6850a9cca46a776cc0b9bb4a18e1b564888a8d92776924e0a5		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD19F 10712 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.