Malicious PDF — malware analysis report

Static analysis result for SHA-256 b82fab5017c46a64…

MALICIOUS

PDF

75.7 KB Created: 2020-08-05 18:18:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bf8c5d77b6f89c9af8b2d8635f60c42c SHA-1: 56f63765358e45c26e17e338978ebc8021419b62 SHA-256: b82fab5017c46a64a24a39acc3f50c4d8f0ee829e97265f4410302614018bf88
150 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.cc, which is used to obscure the final destination. The document body, though heavily obfuscated, contains the same lure text as the redirector URL. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK confirms the presence of malicious redirection. The PDF_SEO_LINK_FARM heuristic indicates a large number of outbound links, many hosted on Shopify, suggesting a link farm used for SEO poisoning or to host further malicious content.

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.cc/pify?keyword=anthony+robbins+unlimited+power+pdf
    • http://files.lukalahfarm.com/uploads/1/3/0/9/130969790/ee1e72d.pdf
    • http://files.ultiocrati.com/uploads/1/3/1/3/131398380/2ca772df14d.pdf
    • http://files.eyer-sherry-promotional-portfolio-2019-2020.com/uploads/1/3/0/8/130813427/109005.pdf
    • http://files.nahomiichino.com/uploads/1/3/0/8/130874254/janoterogawor_jebima_taxilekigev.pdf
    • http://files.porterauthority.com/uploads/1/3/0/9/130969503/rufoxajixonew.pdf
    • https://cdn.shopify.com/s/files/1/0430/9054/2743/files/boseluwuxomomerizugem.pdf
    • https://cdn.shopify.com/s/files/1/0429/5278/6074/files/pexedixovinodaxojopufex.pdf
    • https://cdn.shopify.com/s/files/1/0429/7634/6266/files/husqvarna_lawn_mower_manual.pdf
    • https://cdn.shopify.com/s/files/1/0435/3759/6575/files/accurate_scope_vanilla.pdf
    • https://cdn.shopify.com/s/files/1/0433/5039/2984/files/giwekivi.pdf
    • https://cdn.shopify.com/s/files/1/0428/3983/4780/files/how_to_edit_hosts_file_windows_7.pdf
    • https://cdn.shopify.com/s/files/1/0430/8199/0295/files/66733941032.pdf
    • https://cdn.shopify.com/s/files/1/0428/1804/4063/files/16747898132.pdf
    • https://cdn.shopify.com/s/files/1/0433/1234/9334/files/13037129107.pdf
    • https://cdn.shopify.com/s/files/1/0431/5624/2589/files/fugijekosijimopukano.pdf
    • https://cdn.shopify.com/s/files/1/0429/7749/3146/files/leage_of_graphs.pdf
    • https://cdn.shopify.com/s/files/1/0428/6873/6166/files/gezabufed.pdf
    • https://cdn.shopify.com/s/files/1/0432/6742/4416/files/63329330162.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_off0000eaff.bin
72d014eef45f65e107c5a7bfa6669784fbb9796bbd70709888bbe3f51c852a75
pdf-font-stream PDF embedded font (sfnt) at offset 0xEAFF 5392 bytes
font_01_sfnt_off0000fd42.bin
0a0334b6e53cc5dde6e2f584d318cc917337cb44ff20d75a7c897d2aa2810b64
pdf-font-stream PDF embedded font (sfnt) at offset 0xFD42 10560 bytes