Malicious PDF — malware analysis report

Static analysis result for SHA-256 a042a2ce5711b698…

MALICIOUS

PDF

41.5 KB Created: 2020-08-19 23:14:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7de9957e768ffcd59b1aa435f38389d1 SHA-1: 7e39071c9f858c26780db0e3266c59a0fdc05aad SHA-256: a042a2ce5711b69869aeffe0c88c7c600ee538a70a66c043cdca858f4f6cc657
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic identifying a malicious redirector at 'https://ttraff.com/pify?keyword=kp+org+wa+member+guides'. The document body, though heavily obfuscated, also contains this URL, suggesting a lure to external malicious content. The presence of many links to Shopify domains, some confirmed benign, indicates a link farm strategy to potentially improve search engine ranking or distribute malicious content.

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.com/pify?keyword=kp+org+wa+member+guides
    • http://buxoriluv.camaschurch.net/uploads/1/3/1/4/131437619/sitej.pdf
    • http://files.cshwhalingmuseum.org/uploads/1/3/0/7/130775192/bilamuvifosixar.pdf
    • http://larosi.cthorwigs.com/uploads/1/3/1/6/131606624/supufif-pinozugokepa-telod.pdf
    • https://cdn.shopify.com/s/files/1/0434/0105/2310/files/22698884378.pdf
    • https://cdn.shopify.com/s/files/1/0431/6859/6123/files/42489993272.pdf
    • https://cdn.shopify.com/s/files/1/0435/4523/1509/files/5787180546.pdf
    • https://cdn.shopify.com/s/files/1/0427/6961/2966/files/dell_broadcom_ush.pdf
    • https://cdn.shopify.com/s/files/1/0428/9200/1433/files/the_longman_reader_10th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0433/5042/5750/files/96010457324.pdf
    • https://cdn.shopify.com/s/files/1/0429/6137/1290/files/mejizelomerelunorotuwuxu.pdf
    • https://cdn.shopify.com/s/files/1/0433/8611/0110/files/10068159408.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_off000063c6.bin
20f67e4e681902d8c31fbdac80dea66a27d8d949202cdfd7faa26b39653db423		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63C6 5448 bytes
font_01_sfnt_off0000763f.bin
db6c77cbd795c28a77770acb5775022e6d11139bd62657eb2063e67f3be130d8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x763F 10244 bytes

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