Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a149ebcf7ae3ad2…

MALICIOUS

PDF

41.7 KB Created: 2020-08-07 20:15:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 028d67be62f67646096d7be7b8f5f739 SHA-1: 3d761b184f148dca8264b71b7c1f7eaa71a83df9 SHA-256: 1a149ebcf7ae3ad20fe308a2fdb0ea911f8760cb43315ebb2fb9f56a54c71a10
150 Risk Score

Malware Insights

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

The PDF was flagged as malicious due to a critical heuristic firing for a redirector link pointing to 'ttraff.com'. This indicates the document is likely a lure to a malicious site. The PDF also contains a large number of external links, many hosted on Shopify, suggesting a link farm or SEO poisoning attempt. No scripts were extracted, but the presence of the malicious redirector is sufficient evidence of malicious intent.

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=application+of+computer+in+different+fields+pdf
    • http://files.windycreek1910.com/uploads/1/3/1/4/131437689/6098753.pdf
    • http://files.bocesta.net/uploads/1/3/1/8/131871648/ef2764f27f765b.pdf
    • http://files.jasmafusioncuisine.com/uploads/1/3/1/3/131381722/9254902.pdf
    • http://dasapidun.thedillybag.net/uploads/1/3/2/8/132816202/3f4e5.pdf
    • https://cdn.shopify.com/s/files/1/0428/5625/1555/files/24590125993.pdf
    • https://cdn.shopify.com/s/files/1/0439/9579/1518/files/input_file_accept_doc_docx.pdf
    • https://cdn.shopify.com/s/files/1/0432/7201/1941/files/jivanerata.pdf
    • https://cdn.shopify.com/s/files/1/0444/0319/6070/files/how_to_change_hud_color_elite_dangerous.pdf
    • https://cdn.shopify.com/s/files/1/0427/8488/2844/files/93414047141.pdf
    • https://cdn.shopify.com/s/files/1/0432/7397/8011/files/78173305937.pdf
    • https://cdn.shopify.com/s/files/1/0428/7230/7875/files/46594457216.pdf
    • https://cdn.shopify.com/s/files/1/0438/4060/2269/files/general_characteristics_of_non_chordates.pdf
    • https://cdn.shopify.com/s/files/1/0435/8150/5695/files/gitanifapito.pdf
    • https://cdn.shopify.com/s/files/1/0438/0898/1153/files/sineneduboxepidid.pdf
    • https://cdn.shopify.com/s/files/1/0455/4008/1829/files/an_orange_for_frankie.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_off00006729.bin
4565e63da96701c8140d278f6049aab11d586053c659896a9c60fbb022295c22		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6729 5288 bytes
font_01_sfnt_off00007914.bin
f4d18236322c21c612ceb54c7ded3775d6f418772fffdd016bf19d94af7db5fa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7914 9544 bytes

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