Malicious PDF — malware analysis report

Static analysis result for SHA-256 3cde0fcd5de4ea97…

MALICIOUS

PDF

41.1 KB Created: 2020-08-27 20:44:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8dde3b2c24d41ab4d6001688a8aad9cb SHA-1: 30834643fe2598eb04b190fca5354405b5ba42db SHA-256: 3cde0fcd5de4ea97f01be83498ea60191ec5107a64bab080bcc73d68c560f84e
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded URLs, with one heuristic specifically identifying it as a PDF SEO link farm. The primary malicious URL, 'https://ttraff.ru/pify?keyword=it+stephen+king+full+novel', is flagged as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting an attempt to lure users to malicious content or to manipulate search engine results.

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=it+stephen+king+full+novel
    • http://files.goadsandwelldrivennails.org/uploads/1/3/1/3/131384468/lulonun.pdf
    • https://cdn.shopify.com/s/files/1/0431/0302/7361/files/30142763460.pdf
    • https://cdn.shopify.com/s/files/1/0430/8615/1834/files/mama_bear_legal_forms.pdf
    • https://cdn.shopify.com/s/files/1/0428/2492/5347/files/59532934623.pdf
    • https://cdn.shopify.com/s/files/1/0440/6371/9574/files/artificial_intelligence_file.pdf
    • https://cdn.shopify.com/s/files/1/0427/5650/5756/files/gipusazakizile.pdf
    • https://cdn.shopify.com/s/files/1/0435/5883/0231/files/bugatti_shoes_size_guide.pdf
    • https://cdn.shopify.com/s/files/1/0429/2440/8988/files/14674776213.pdf
    • https://cdn.shopify.com/s/files/1/0433/2411/3049/files/the_reaper_s_image.pdf
    • https://cdn.shopify.com/s/files/1/0436/1850/0765/files/caudillos_de_la_revolucion_mexicana_enrique_krauze.pdf
    • https://cdn.shopify.com/s/files/1/0431/6538/4861/files/41716451010.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_off00006427.bin
e637937cab65a1b0d0107b4020a6e8138620d5150ebc32580a7d1fdf51567f5a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6427 4920 bytes
font_01_sfnt_off000074f2.bin
4fd788776269f4d58b821d2d89ae90a32e9423d56dd42585208c45a28a5588a4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74F2 10352 bytes

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