Malicious PDF — malware analysis report

Static analysis result for SHA-256 2aaa814ce44df5f2…

MALICIOUS

PDF

43.5 KB Created: 2020-08-06 06:27:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a07aa7d16178fdc2e3c8abc55633f859 SHA-1: bd7772332ebe61e574a3bd632e0d6f59c8b8a078 SHA-256: 2aaa814ce44df5f2bf59a246fe4f3d0bb66ed6e6111b86a9e57d402264e099fc
150 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many pointing to what appears to be SEO-optimized content farms. One prominent link, disguised as an educational resource, redirects to a known malicious domain (ttraff.com). This suggests a phishing or malware distribution attempt, likely leveraging the PDF as a lure to drive traffic to malicious infrastructure.

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.com/pify?keyword=ncert+exemplar+book+class+11+biology+pdf
    • http://files.soltextiles.com/uploads/1/3/0/7/130738998/sazivex-wumajora-mivotu.pdf
    • http://files.groundfloorgraphics.com/uploads/1/3/0/8/130873804/kipej.pdf
    • http://files.pamelaquillin.com/uploads/1/3/0/8/130874246/acc98f63608b.pdf
    • https://cdn.shopify.com/s/files/1/0434/8215/3112/files/msm_photodetector.pdf
    • https://cdn.shopify.com/s/files/1/0429/9682/6261/files/14669775203.pdf
    • https://cdn.shopify.com/s/files/1/0432/4786/1928/files/33002766832.pdf
    • https://cdn.shopify.com/s/files/1/0430/3018/4098/files/69196808089.pdf
    • https://cdn.shopify.com/s/files/1/0435/7803/2296/files/laxezolokipegikusid.pdf
    • https://cdn.shopify.com/s/files/1/0432/4101/3415/files/80510324855.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/lozafawofife.pdf
    • https://cdn.shopify.com/s/files/1/0431/8678/2369/files/9925161665.pdf
    • https://cdn.shopify.com/s/files/1/0435/2681/5895/files/tujabuz.pdf
    • https://cdn.shopify.com/s/files/1/0431/8547/1656/files/zatipakazunusonifojomodu.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_off00006995.bin
287ff394ba8dc4e0287e50ec811ca92a9f008dc75e90db3252affec86471c133		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6995 5868 bytes
font_01_sfnt_off00007d8e.bin
0fa456e2d9524b5b1fd16b04d4b299d264bd83fdb27db3c317a4309e32aeca41		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D8E 10436 bytes

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