Malicious PDF — malware analysis report

Static analysis result for SHA-256 81e7478d54a8e664…

MALICIOUS

PDF

45.6 KB Created: 2020-07-31 00:11:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 62018e7ee7be09563808fd409c541d4f SHA-1: 4ad8ca0f2243786e36895805fac0c9af4cd0eef6 SHA-256: 81e7478d54a8e6644109b2cc5eed3bf8ff3b81f9ae1a44e5d8bd24f5800c820c
120 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, with the primary heuristic identifying a link to a known malicious redirector. The document body, though heavily obfuscated, appears to be a lure related to 'Les fleurs du mal'. The presence of a link farm suggests an attempt to drive traffic to malicious sites, potentially for phishing or malware distribution.

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=les+fleurs+du+mal+r%25C3%25A9sum%25C3%25A9+court+pdf
    • http://files.farmviabilityconference.com/uploads/1/3/0/8/130814225/f40784d9562fc8.pdf
    • http://files.crescentbaydollfanciers.com/uploads/1/3/2/6/132695492/aad70.pdf
    • http://files.occmedfordcs.com/uploads/1/3/1/4/131453045/refufopiwoxenegitu.pdf
    • http://files.adentausa.com/uploads/1/3/2/6/132696063/6743072.pdf
    • https://cdn.shopify.com/s/files/1/0434/2834/8056/files/piwuxu.pdf
    • https://cdn.shopify.com/s/files/1/0438/0252/5856/files/28116228289.pdf
    • https://cdn.shopify.com/s/files/1/0433/0638/5558/files/mulegilojol.pdf
    • https://cdn.shopify.com/s/files/1/0428/7270/1095/files/31389817139.pdf
    • https://cdn.shopify.com/s/files/1/0440/1666/4734/files/temezeti.pdf
    • https://cdn.shopify.com/s/files/1/0429/2981/5705/files/napopanoxixukow.pdf
    • https://cdn.shopify.com/s/files/1/0429/9807/1450/files/40987441718.pdf
    • https://cdn.shopify.com/s/files/1/0436/8649/4361/files/467689007.pdf
    • https://cdn.shopify.com/s/files/1/0434/6806/2872/files/jevinofo.pdf
    • https://cdn.shopify.com/s/files/1/0433/7506/7297/files/66828430370.pdf
    • https://cdn.shopify.com/s/files/1/0429/9456/5271/files/27253786772.pdf
    • https://cdn.shopify.com/s/files/1/0434/4738/6268/files/daviku.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/
    • https://cdn.shopify.com/s/files/1/0428/7270/1095/files

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000705b.bin
95610e0d17f628ff637314e3e0cb6f81167a14afda4dd7412ba0a7182addc33b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x705B 5112 bytes
font_01_sfnt_off00008175.bin
7cb36288d6afb9a793991ff83350a108391364729f83a696e1f82103d40ee912		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8175 11960 bytes

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