Malicious PDF — malware analysis report

Static analysis result for SHA-256 f33b3a0715c9997a…

MALICIOUS

PDF

38.7 KB Created: 2020-08-19 11:54:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9a30e98f97c699d4c30bb203f396001f SHA-1: 39a281fa1e6f1d3fc625591d9cc7bbb751fafcea SHA-256: f33b3a0715c9997a4456ecddbf315f6fe417445959e2be3b0cc01bb74be14aac
150 Risk Score

Malware Insights

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

The PDF document exhibits characteristics of a link farm, with numerous embedded URLs pointing to external resources. One primary URL, 'https://ttraff.com/pify?keyword=nnpc+forensic+audit+report+pdf', is identified as a malicious redirector. The document body, though partially corrupted, contains text that attempts to mimic a legitimate report, likely to lure users into clicking the malicious links. The ML classifier strongly flagged this PDF as malicious.

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=nnpc+forensic+audit+report+pdf
    • http://files.adorablepotatocreations.com/uploads/1/3/1/4/131483491/kanifatavo.pdf
    • https://cdn.shopify.com/s/files/1/0431/9592/4637/files/bench_test_starter.pdf
    • https://cdn.shopify.com/s/files/1/0432/7243/7913/files/vuvexaxulur.pdf
    • https://cdn.shopify.com/s/files/1/0432/3350/9534/files/xomolat.pdf
    • https://cdn.shopify.com/s/files/1/0440/5107/1126/files/angular_reset_form_dirty.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mojarugalemidim.pdf
    • https://cdn.shopify.com/s/files/1/0434/8634/7414/files/44173874076.pdf
    • https://cdn.shopify.com/s/files/1/0448/6466/7810/files/cement_plant_handbook.pdf
    • https://cdn.shopify.com/s/files/1/0432/6303/3502/files/2731894660.pdf
    • https://cdn.shopify.com/s/files/1/0429/8512/8099/files/www_clippercard_com.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_off00005928.bin
84b1c9f65c1b6db4b705eedbc15038929cc26d11733cea13e4b5db620b0518fa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5928 5084 bytes
font_01_sfnt_off00006a76.bin
801787225f0ac9e1e6f8b1f616d2797c0bc293c46b16d1c7a8d534e95e7be0ed		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A76 10536 bytes

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