Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d4c15a7db005f34…

MALICIOUS

PDF

43.0 KB Created: 2020-08-06 18:57:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6e96033e2bd4d00e1fe7cb18f37a7041 SHA-1: 6fbe014ca84c1e4d1ec2e8dd5b6cc9af013eefac SHA-256: 2d4c15a7db005f34eb2e9b769e7b118978e1351137188f6087d7f7e0688e322f
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a link farm and a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/pify?keyword=la+ansiedad+y+el+estres+pdf', which is also flagged as a malicious redirector. This suggests the primary goal is to redirect the user to malicious content. 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.ru/pify?keyword=la+ansiedad+y+el+estres+pdf
    • http://files.greaterfortpolkarearealtors.com/uploads/1/3/1/4/131437394/janaxoripaw.pdf
    • http://files.alt-shn.org/uploads/1/3/1/4/131437702/9264172.pdf
    • http://files.trans-it.org/uploads/1/3/0/8/130874109/37718c1f55c.pdf
    • https://cdn.shopify.com/s/files/1/0432/0205/2257/files/40517412332.pdf
    • https://cdn.shopify.com/s/files/1/0432/4897/6032/files/java_missing_return_statement.pdf
    • https://cdn.shopify.com/s/files/1/0429/9754/7157/files/comfort_pro_apu.pdf
    • https://cdn.shopify.com/s/files/1/0434/0131/4456/files/dynamics_of_machinery_notes.pdf
    • https://cdn.shopify.com/s/files/1/0428/2603/9463/files/45771111332.pdf
    • https://cdn.shopify.com/s/files/1/0433/7342/8888/files/36105954919.pdf
    • https://cdn.shopify.com/s/files/1/0431/0306/0128/files/getelementbyid_vs_queryselector.pdf
    • https://cdn.shopify.com/s/files/1/0429/8611/1137/files/33679136811.pdf
    • https://cdn.shopify.com/s/files/1/0427/8360/4903/files/99564605363.pdf
    • https://cdn.shopify.com/s/files/1/0430/7612/4821/files/family_trust_deed_format.pdf
    • https://cdn.shopify.com/s/files/1/0431/2875/0241/files/29584270767.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_off00006839.bin
c94923fa2fa41d13d1d10bb8cbd1afba0fb36575dc00c7b48b411ebd518e6974		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6839 5080 bytes
font_01_sfnt_off000079a1.bin
044009101b7e6afb51410b514e629c88a1c6c0081555a937e9c50f82fb086e29		 pdf-font-stream PDF embedded font (sfnt) at offset 0x79A1 11100 bytes

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