Malicious PDF — malware analysis report

Static analysis result for SHA-256 e40dd87232fc6525…

MALICIOUS

PDF

41.1 KB Created: 2020-08-16 22:30:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 82e06e33f152393bf306c99e40323515 SHA-1: b76fcc91accb2061a2001a1e1bbe9a288f6f346d SHA-256: e40dd87232fc6525b5fac321c6d1bc6fcfc1f43ba4e710b0a2061b9bde309695
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to Shopify domains, but one critical link directs to a known malicious redirector. This suggests the document is designed as a link farm to obscure the ultimate malicious destination. The primary malicious URL is https://ttraff.ru/pify?keyword=character+development+worksheet, which is likely used to redirect users to further 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.ru/pify?keyword=character+development+worksheet
    • http://lemufi.charlietaylorphotography.com/uploads/1/3/1/8/131857315/vogev_vatusum.pdf
    • http://gugowize.thestrongestfish.co.uk/uploads/1/3/1/4/131437736/83f9061899.pdf
    • http://zekaduzop.simplycreativetreasures.com/uploads/1/3/2/6/132681352/gomidataxijekane.pdf
    • http://files.marielouisejones.com/uploads/1/3/1/0/131071249/7b14151.pdf
    • https://cdn.shopify.com/s/files/1/0437/8856/6677/files/9005270971.pdf
    • https://cdn.shopify.com/s/files/1/0432/8708/5222/files/aporofobia_completo.pdf
    • https://cdn.shopify.com/s/files/1/0435/3284/5207/files/kajusaxijararuzapolu.pdf
    • https://cdn.shopify.com/s/files/1/0435/4359/3109/files/wrap_text_in_google_sheets.pdf
    • https://cdn.shopify.com/s/files/1/0430/1560/2337/files/17433645525.pdf
    • https://cdn.shopify.com/s/files/1/0432/2449/8343/files/tinileluxuwafiguvagipuzu.pdf
    • https://cdn.shopify.com/s/files/1/0444/3914/2566/files/pogexidelaw.pdf
    • https://cdn.shopify.com/s/files/1/0433/3607/3366/files/letagefotizapamimukirifox.pdf
    • https://cdn.shopify.com/s/files/1/0432/5366/1858/files/jessica_artuso_cimmino.pdf
    • https://cdn.shopify.com/s/files/1/0432/3665/5259/files/sabizimijixexadilesen.pdf
    • https://cdn.shopify.com/s/files/1/0446/2444/5603/files/jatetawefovasijirupe.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_off00006197.bin
e6915a5b059111f7106b982748d1cdf5c9fab2e42f8a1bd791dd69b651dd7bac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6197 5432 bytes
font_01_sfnt_off000073fe.bin
2e0fc04ae796f0e6ac090f3ca328dfaf8e9cd9a5aa97dfabcee5b9eeb0f6374b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73FE 10356 bytes

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