Malicious PDF — malware analysis report

Static analysis result for SHA-256 e266978c990f9d79…

MALICIOUS

PDF

44.2 KB Created: 2020-08-04 08:52:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4086d66c553efa117629d2594eddbc78 SHA-1: 405672f70c54710e2b92fe64761a9f3f7fa7b58c SHA-256: e266978c990f9d79512a5a9e9d886b994ebdd6151ef12dd7b23d7e310ff6ecae
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic identifying a malicious redirector at 'https://ttraff.com/pify?keyword=dled+assignment+front+page+pdf'. The document body, though heavily obfuscated, contains text suggesting a lure related to an assignment download. The presence of a link farm further indicates an attempt to manipulate search engine results or distribute malicious content broadly. No scripts were extracted from this sample.

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=dled+assignment+front+page+pdf
    • http://files.superiorsearchllc.com/uploads/1/3/2/6/132681164/netobo.pdf
    • http://files.robsellsatl.com/uploads/1/3/1/3/131380288/gafabasonafan-siradi-viwezipa.pdf
    • http://files.hceguhsdaz.org/uploads/1/3/1/3/131383977/9750425.pdf
    • http://files.serenitycottagelondonontariocanada.com/uploads/1/3/2/7/132740958/5044448.pdf
    • http://files.theheids.net/uploads/1/3/0/7/130739971/6148588.pdf
    • https://cdn.shopify.com/s/files/1/0429/1110/5191/files/all_antonyms_list.pdf
    • https://cdn.shopify.com/s/files/1/0438/5135/0166/files/loxojegojofa.pdf
    • https://cdn.shopify.com/s/files/1/0438/3653/9045/files/dexatuxag.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vidabuvuwegorowomilamum.pdf
    • https://cdn.shopify.com/s/files/1/0430/6888/3098/files/69930130382.pdf
    • https://cdn.shopify.com/s/files/1/0430/3604/9571/files/8332074049.pdf
    • https://cdn.shopify.com/s/files/1/0434/0760/5923/files/14981798598.pdf
    • https://cdn.shopify.com/s/files/1/0433/1631/4277/files/87599292813.pdf
    • https://cdn.shopify.com/s/files/1/0434/6370/4729/files/array_slice_javascript.pdf
    • https://cdn.shopify.com/s/files/1/0434/7238/8249/files/tudas.pdf
    • https://cdn.shopify.com/s/files/1/0440/5651/0616/files/katelitabuxow.pdf
    • https://cdn.shopify.com/s/files/1/0432/5769/2320/files/panasonic_kx-_tga931t_manual.pdf
    • https://cdn.shopify.com/s/files/1/0433/9440/0414/files/mawigijivabisulipagekix.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_off00006e64.bin
3d2ab313bb8c790a0ec200e261479e8beee5035ba9aff8450c61895e7a86a236
pdf-font-stream PDF embedded font (sfnt) at offset 0x6E64 5360 bytes
font_01_sfnt_off0000808b.bin
8a45b70a62fe1b9ad020262887664fb8b62ea670ac8f66362d87b39be179cb47
pdf-font-stream PDF embedded font (sfnt) at offset 0x808B 10180 bytes