Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c0da7e3886f9ff2…

MALICIOUS

PDF

39.0 KB Created: 2020-08-14 02:40:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 986ac6b98f85b57c01bd76a59739d6fa SHA-1: cfb53719d7c34fdc743ad241eeef42323925f86b SHA-256: 3c0da7e3886f9ff2090f2b840d38e92ba7a284cc8661082aff3f3ce17fda280b
150 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 firing indicating a malicious redirector. The primary malicious URL identified is https://ttraff.com/pify?keyword=libro+cerebro+y+lenguaje+pdf, which likely leads to further malicious content. The document body, though heavily obfuscated, contains this URL and other PDF links, suggesting a lure to download malicious files or visit phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=libro+cerebro+y+lenguaje+pdf
    • http://wezolawo.thecraptrader.co.uk/uploads/1/3/1/6/131637814/mifubu.pdf
    • http://files.ckcondos.com/uploads/1/3/0/8/130814056/wovapujuxunazedip.pdf
    • http://vagoju.alliesonthejourney.com/uploads/1/3/1/4/131407406/2ed34f397b.pdf
    • http://files.misshavishamscuriosities.com/uploads/1/3/1/6/131606198/tolexisa-gepumaxeju.pdf
    • https://cdn.shopify.com/s/files/1/0433/2614/4670/files/fuwujemapun.pdf
    • https://cdn.shopify.com/s/files/1/0431/5725/8401/files/english_worksheet_for_beginners.pdf
    • https://cdn.shopify.com/s/files/1/0427/6797/4556/files/848298065.pdf
    • https://cdn.shopify.com/s/files/1/0430/5109/0077/files/piramide_alimenticia_mexicana.pdf
    • https://cdn.shopify.com/s/files/1/0432/3128/1312/files/lotuzurewodeme.pdf
    • https://cdn.shopify.com/s/files/1/0433/4501/9045/files/plant_and_animal_tissue_culture.pdf
    • https://cdn.shopify.com/s/files/1/0430/0426/4601/files/wabizumobomuwugu.pdf
    • https://cdn.shopify.com/s/files/1/0434/2477/6354/files/venogukixiveb.pdf
    • https://cdn.shopify.com/s/files/1/0432/7938/4734/files/povigaxexa.pdf
    • https://cdn.shopify.com/s/files/1/0429/6717/1223/files/the_economist_world_in_2020_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/4568/2332/files/22805531293.pdf
    • https://cdn.shopify.com/s/files/1/0433/5196/5855/files/arbeitsvertrag_minijob.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_off00005775.bin
a381ba3da247f340bd6c8446d806b5b235b5d9949e1690395b8138670f08daa8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5775 5404 bytes
font_01_sfnt_off000069e6.bin
5462d0a161b63c5f3ff3a5dfacd3c9a74914c84c292817e46ab2e237df309be1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x69E6 10864 bytes

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