Malicious PDF — malware analysis report

Static analysis result for SHA-256 27e3a06e2ed1b7c6…

MALICIOUS

PDF

64.5 KB Created: 2020-08-10 01:35:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 951c30917f0f70b2ef63094c006af9ea SHA-1: 4fb3eb13db9f48ae23a42386d6f877a967ebfd13 SHA-256: 27e3a06e2ed1b7c6c47f28dad30c75031e4f10d2ed1ceb2b7ad7f9e3581fd30f
120 Risk Score

Malware Insights

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

The PDF contains a link farm designed to appear as search results, with a primary malicious redirector URL. The document body, though heavily obfuscated, contains the target URL, suggesting the intent is to lure the user to click the malicious link. The presence of multiple benign-looking Shopify links is likely a tactic to increase the perceived legitimacy of the document.

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=georgiana+duchess+of+devonshire+amanda+foreman+pdf
    • http://files.autumnthoughts.com/uploads/1/3/0/7/130775232/lajaner.pdf
    • http://tolalalak.csinternazionali.org/uploads/1/3/0/7/130740051/voxomovawitifap.pdf
    • http://lerugi.shopbikeshopwh.com/uploads/1/3/0/7/130775432/balodizijaru.pdf
    • http://files.transnationaleuropeanstudies.org/uploads/1/3/0/7/130740563/3b5ebea.pdf
    • http://files.atlanteanheart.com/uploads/1/3/2/3/132302871/6811729.pdf
    • https://cdn.shopify.com/s/files/1/0429/0809/0535/files/download_un_biologi_sma_2020.pdf
    • https://cdn.shopify.com/s/files/1/0436/5346/4214/files/9711352127.pdf
    • https://cdn.shopify.com/s/files/1/0430/0662/3903/files/autodesk_alias_speedform.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/29426312843.pdf
    • https://cdn.shopify.com/s/files/1/0434/7458/3709/files/bid_bond_template.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/32506959796.pdf
    • https://cdn.shopify.com/s/files/1/0428/3914/6662/files/22235241635.pdf
    • https://cdn.shopify.com/s/files/1/0433/3184/6296/files/kijugasofuvajixipina.pdf
    • https://cdn.shopify.com/s/files/1/0430/3529/5905/files/46045460864.pdf
    • https://cdn.shopify.com/s/files/1/0433/5347/3189/files/wipidatatikinimizopapew.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/35679391278.pdf
    • https://cdn.shopify.com/s/files/1/0428/8148/2918/files/nufap.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_off0000b54f.bin
4116497c20f31294a164ab5a170e33fcc9f5b71e1dbd8f500ccb256e7b2cf3d9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB54F 5628 bytes
font_01_sfnt_off0000c859.bin
4e3634478292d3a8202376c8e24e4446193f290ca526325b1aec7da25e99ae50		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC859 13668 bytes

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