Malicious PDF — malware analysis report

Static analysis result for SHA-256 38fbe9fa3a0e6ff1…

MALICIOUS

PDF

63.7 KB Created: 2020-08-10 13:49:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8306c4a8d2ed6e70b43e0127e9cfb3ce SHA-1: 3fd5a72254f5d70e9f4188540379bd0d851c5b85 SHA-256: 38fbe9fa3a0e6ff16a672b1a1377d21074e85c1644dc3552856d29282c819f9d
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a link farm designed to appear as search results, with one prominent link leading to a known malicious redirector. The document body itself contains obfuscated text and the malicious URL, suggesting an attempt to trick users into downloading further content. The presence of numerous external links, many pointing to Shopify, indicates a link farm SEO strategy to obscure the malicious redirector.

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.ru/pify?keyword=download+alcor%25C3%25A3o+em+portugues+pdf
    • http://mopik.purpletigergonewild.com/uploads/1/3/2/8/132814930/868666adcc1cd.pdf
    • http://files.attorneydianebaker.com/uploads/1/3/1/0/131070178/3994041.pdf
    • http://molasaj.waywardcompass.com/uploads/1/3/1/4/131438641/kanutor-verabuwo.pdf
    • https://cdn.shopify.com/s/files/1/0432/6345/9496/files/breaking_dawn_free.pdf
    • https://cdn.shopify.com/s/files/1/0433/7962/2040/files/sefulaso.pdf
    • https://cdn.shopify.com/s/files/1/0433/5465/2822/files/dairy_cattle_production_and_management_in_ethiopia.pdf
    • https://cdn.shopify.com/s/files/1/0434/8336/5528/files/63867560576.pdf
    • https://cdn.shopify.com/s/files/1/0430/6858/8194/files/angularjs_6_tutorial_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/2525/9944/files/96309244679.pdf
    • https://cdn.shopify.com/s/files/1/0438/1795/9586/files/simple_past_tense_and_present_perfect_tense_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0430/4361/8969/files/64621723007.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/setixinojed.pdf
    • https://cdn.shopify.com/s/files/1/0436/5172/7513/files/biography_of_great_leaders.pdf
    • https://cdn.shopify.com/s/files/1/0437/8660/0609/files/buderus_logamatic_rc310_bedienungsanleitung.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_off0000abf4.bin
648a03047a878693d3760eaa93c4e6896d9b633a7ff4be513de8ec2fdbf6248f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xABF4 5884 bytes
font_01_sfnt_off0000bf68.bin
87668e2a3b792f8071b0757581c6a2329ca34dab893e3389477a2fa1488ce3e5		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBF68 15860 bytes

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