Malicious PDF — malware analysis report

Static analysis result for SHA-256 07fa02a91791a1ec…

MALICIOUS

PDF

41.2 KB Created: 2020-08-04 11:04:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 873f59248643c583cc488bd97720fba0 SHA-1: 4165ca46bfec0396180b254f07ffb853b2db75e3 SHA-256: 07fa02a91791a1ec57997d8f597eb7eacc7eb372ae6104cae44eae2b559784a1
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link to a known malicious redirector, ttraff.com, which is likely used to distribute further malware or phishing content. The document body, though heavily obfuscated, contains the same URL, suggesting it's the primary lure. The presence of numerous other Shopify links indicates a link farm technique to improve search engine ranking for malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=metodos+anticonceptivos+inyectables+pdf
    • http://files.igcseaccounts.com/uploads/1/3/0/7/130775612/90790b207da7.pdf
    • http://files.ventana-abierta.es/uploads/1/3/1/0/131071166/fuwakomaretafu.pdf
    • http://files.brymelink.com/uploads/1/3/0/8/130813931/ff377f43420.pdf
    • http://files.rayoflightwitness.com/uploads/1/3/0/9/130969834/2692273.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0432/7853/2761/files/90897450528.pdf
    • https://cdn.shopify.com/s/files/1/0428/3292/0732/files/31529438309.pdf
    • https://cdn.shopify.com/s/files/1/0431/2409/7191/files/bekif.pdf
    • https://cdn.shopify.com/s/files/1/0433/0645/1094/files/tazovexebumevasenew.pdf
    • https://cdn.shopify.com/s/files/1/0428/3452/6375/files/28859134389.pdf
    • https://cdn.shopify.com/s/files/1/0431/9579/3557/files/78594654110.pdf
    • https://cdn.shopify.com/s/files/1/0437/5255/4657/files/noratibazog.pdf
    • https://cdn.shopify.com/s/files/1/0436/2780/6883/files/23831478163.pdf
    • https://cdn.shopify.com/s/files/1/0435/9749/6488/files/descriptive_language_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0437/9348/1889/files/wizopa.pdf
    • https://cdn.shopify.com/s/files/1/0433/4472/4133/files/raresej.pdf
    • https://cdn.shopify.com/s/files/1/0431/6440/1818/files/wedotalegeturofonojexeke.pdf
    • https://cdn.shopify.com/s/files/1/0438/4132/3170/files/11932697484.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006113.bin
4b47b951f1f32ad067331b34caccb1c5f6afe19b458fbe571fba89226c116ad7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6113 5360 bytes
font_01_sfnt_off0000737b.bin
2f1a3eee5c38ba7d62a1ba0fed34f76a3c9bf3aa23f11fbeeb2f92157fb73c97		 pdf-font-stream PDF embedded font (sfnt) at offset 0x737B 10628 bytes

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