Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6f267c3cf0c2a5e…

MALICIOUS

PDF

46.5 KB Created: 2020-08-17 13:11:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5446f47189c21ba29d3f9e34b0729d68 SHA-1: 742925985df284611c9008e59e856b2748fd7981 SHA-256: c6f267c3cf0c2a5e6feecba7e650a2f60795f777e42770049c3e0e611e87c090
120 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a known malicious infrastructure, identified by the 'PDF_MALICIOUS_REDIRECTOR_LINK' heuristic. Additionally, the PDF exhibits characteristics of a link farm, with numerous embedded URLs, as indicated by the 'PDF_SEO_LINK_FARM' heuristic. The document body, though heavily obfuscated, contains the malicious redirector URL, suggesting an attempt to lure users to malicious content under the guise of 'ergonomics furniture design'. 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.cc/pify?keyword=ergonomics+furniture+design+pdf
    • http://files.simcoshelties.net/uploads/1/3/2/6/132681992/jopekud-zobaledujelulud-zifuj.pdf
    • https://cdn.shopify.com/s/files/1/0429/9787/4851/files/elna_sewing_machine_parts.pdf
    • https://cdn.shopify.com/s/files/1/0434/4512/5281/files/iron_maiden_wasted_years_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/bodadajigewodozisidezufe.pdf
    • https://cdn.shopify.com/s/files/1/0429/4973/8650/files/15753105715.pdf
    • https://cdn.shopify.com/s/files/1/0431/0145/4500/files/84436610348.pdf
    • https://cdn.shopify.com/s/files/1/0433/3685/9813/files/zifolejodinimadol.pdf
    • https://cdn.shopify.com/s/files/1/0432/4956/5853/files/20339631607.pdf
    • https://cdn.shopify.com/s/files/1/0429/8942/0695/files/80371532719.pdf
    • https://cdn.shopify.com/s/files/1/0430/4296/3613/files/diagnosis_of_hemolytic_anemia.pdf
    • https://cdn.shopify.com/s/files/1/0434/8955/8680/files/10917598724.pdf
    • https://cdn.shopify.com/s/files/1/0432/0142/9662/files/73493822873.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006537.bin
fc743792e37435428e46e025602e037aff85ed25495a2f70eb6559a9dfb18c88		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6537 5072 bytes
font_01_sfnt_off0000765a.bin
2c239ad5d1b2f6ce61b786759bca52e1d2ded5a54562f42d0c2e390b554514f1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x765A 12552 bytes
font_02_sfnt_off00009f40.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9F40 4324 bytes

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