Malicious PDF — malware analysis report

Static analysis result for SHA-256 7be45f106d3603d6…

MALICIOUS

PDF

49.9 KB Created: 2020-09-15 19:21:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7c5695aef4c1d15cd40f13267b73f7a1 SHA-1: d41ffc813579138300e982f4e705269c7125afa7 SHA-256: 7be45f106d3603d6fbb08b6de8d34f840a0ed9f88627a8676eac4e850df71eb1
120 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with critical heuristics identifying a malicious redirector and a link farm. The document body, though heavily obfuscated, contains text related to 'Wake Forest tuition reimbursement' and the malicious URL 'https://ttraff.club/pify?keyword=wake+forest+tuition+reimbursement'. This suggests a phishing or scam lure designed to redirect users to malicious infrastructure.

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.club/pify?keyword=wake+forest+tuition+reimbursement
    • http://rosugogi.happyacresfarm.com/uploads/1/3/0/7/130775200/dawuwesej.pdf
    • http://files.leafoutak.com/uploads/1/3/0/9/130969850/wixebi-bexudivop.pdf
    • http://files.lavenderoomp.com/uploads/1/3/0/8/130873833/7fee560.pdf
    • http://tiruxujub.aspnet-tt.com/uploads/1/3/1/6/131636745/fuzinotulawef-jamadetaxolit.pdf
    • http://makuses.grade5onthego.com/uploads/1/3/2/7/132712129/pigafipizibizo-wubibido.pdf
    • https://static.usrfiles.com/ugd/11baf9_4eb2a2af516441ef831ac3289e2040d6.pdf
    • https://static.usrfiles.com/ugd/4aae87_c5fbe059821644e4b91157326783bba3.pdf
    • https://cdn.shopify.com/s/files/1/0448/4582/6205/files/walmart_w2_form.pdf
    • https://cdn.shopify.com/s/files/1/0429/9957/8773/files/materialismo_filosofico.pdf
    • https://cdn.shopify.com/s/files/1/0435/7590/2363/files/vanaga.pdf
    • https://cdn.shopify.com/s/files/1/0439/5171/8558/files/52672372546.pdf
    • https://cdn.shopify.com/s/files/1/0431/0971/2021/files/chaquetas_formales_modernas_para_mujer.pdf
    • https://static.usrfiles.com/ugd/544c7e_2aa8f79e550d45a49d1777618c1d1da7.pdf
    • https://static.usrfiles.com/ugd/2f07a1_141f09cb780840f188cf16bdefc57d5f.pdf
    • https://static.usrfiles.com/ugd/b8c837_dfe136bcdc9e448dbf4c3a112f7ebd87.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_off0000845f.bin
9bde49a113871e1705b3538c81cc345db47a551d6aca6125890026a5435cc6d4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x845F 5096 bytes
font_01_sfnt_off000095b4.bin
2a5a6fdaa9aad77749397f315696fd2ea9cc3c5af6501d713d4cd613c3f9ca42		 pdf-font-stream PDF embedded font (sfnt) at offset 0x95B4 10736 bytes

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