Malicious PDF — malware analysis report

Static analysis result for SHA-256 45fa2aa388424e08…

MALICIOUS

PDF

39.0 KB Created: 2020-08-12 22:55:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 519bf2d2c48c09ca509a3e6eca4b4a4f SHA-1: c8e8451b957c5c366864e2775381cfeacabea468 SHA-256: 45fa2aa388424e084d49b6852aad17c6a5822f0a7f5b7eae3c3527bc5ac4e110
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a link to a known malicious redirector, ttraff.com, which is likely used to funnel victims to a malicious site. The document body, though heavily obfuscated, contains the same URL and references a document title that matches the URL's keyword parameter, suggesting a lure. The presence of a large number of external PDF links, many hosted on Shopify, indicates a link farm or SEO poisoning attempt to improve the ranking of the malicious redirector. 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.com/pify?keyword=attestation+d+h%25C3%25A9bergement+vierge+a+imprimer+pdf
    • http://files.haydenflooringservices.co.uk/uploads/1/3/0/7/130776481/5815333.pdf
    • http://sirudiso.fairviewlakestudios.com/uploads/1/3/2/6/132681352/litigeji.pdf
    • http://files.onstagesac.com/uploads/1/3/0/7/130776502/zuvirovo.pdf
    • https://cdn.shopify.com/s/files/1/0427/8353/9366/files/96317937503.pdf
    • https://cdn.shopify.com/s/files/1/0429/7038/2490/files/6220293011.pdf
    • https://cdn.shopify.com/s/files/1/0435/5407/8883/files/business_case_studies_books.pdf
    • https://cdn.shopify.com/s/files/1/0432/2931/5229/files/viwuwexojodagipir.pdf
    • https://cdn.shopify.com/s/files/1/0434/1914/0252/files/rapas.pdf
    • https://cdn.shopify.com/s/files/1/0432/4186/5375/files/81848133071.pdf
    • https://cdn.shopify.com/s/files/1/0438/6534/2117/files/385469013.pdf
    • https://cdn.shopify.com/s/files/1/0432/6014/9910/files/74294905311.pdf
    • https://cdn.shopify.com/s/files/1/0436/5818/2809/files/late_bilingualism.pdf
    • https://cdn.shopify.com/s/files/1/0434/4204/5090/files/speak_now_book_download.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_off00005706.bin
7e6c746cce294c9ac4f41ab65c81ebca608b36e95fd6b15f36ea4d9727d3d657		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5706 5756 bytes
font_01_sfnt_off00006a29.bin
c38bd3f24f6d90a56319fa23f855dd35c75decc24d6421c5ad60c0e616dc740f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A29 11128 bytes

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