Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7bb13c8f46472f4…

MALICIOUS

PDF

48.1 KB Created: 2020-08-20 03:01:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 58a9c3f8fdf7ae549eeb86985aca7043 SHA-1: 2bb66ca32b9a9698c90086b6c15f7f8207e52894 SHA-256: f7bb13c8f46472f4ca4e11dc4189d575fc51387ac1535001a01212a9413076fb
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. The document body also contains the same URL, suggesting it's the primary lure. The PDF also contains a large number of external links, many pointing to Shopify domains, which is indicative of a link farm. The primary malicious URL is used to redirect users, likely to a phishing or malware distribution site.

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=avg+antivirus+software+free++for+laptop
    • http://xixex.claireannagarand.com/uploads/1/3/1/6/131637136/1978327.pdf
    • http://pijin.brijcommunity.org/uploads/1/3/2/3/132303354/mixawav_lunikufazujakoz_nobikok_segipegaxesol.pdf
    • http://files.gretchenhelmke.com/uploads/1/3/1/3/131398108/lugem_leposu.pdf
    • http://lovul.lotusranch-homes.com/uploads/1/3/1/4/131454215/savupuvesun-jorunazan-muwamanija.pdf
    • https://cdn.shopify.com/s/files/1/0434/4607/5554/files/79051011209.pdf
    • https://cdn.shopify.com/s/files/1/0433/1687/1333/files/famofajaken.pdf
    • https://cdn.shopify.com/s/files/1/0444/0326/1606/files/cumulative_frequency_distribution_table.pdf
    • https://cdn.shopify.com/s/files/1/0435/3415/5928/files/54686420859.pdf
    • https://cdn.shopify.com/s/files/1/0427/9166/5830/files/86739724342.pdf
    • https://cdn.shopify.com/s/files/1/0429/4190/7100/files/59664201980.pdf
    • https://cdn.shopify.com/s/files/1/0434/6717/8134/files/5759501109.pdf
    • https://cdn.shopify.com/s/files/1/0433/8574/9654/files/14262750080.pdf
    • https://cdn.shopify.com/s/files/1/0429/9145/2314/files/kopap.pdf
    • https://cdn.shopify.com/s/files/1/0431/2973/3282/files/renal_dialysis_procedure.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_off00007d09.bin
aca18f37aa159c08280039f5fc3b1b331c38ac1124eddad223ab49a954e0c995		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D09 5208 bytes
font_01_sfnt_off00008ef3.bin
40a5c20e6ab5427f2c8d91668fb3c0f543753d783406c3cbe6ce1a9ed0103eb2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8EF3 10704 bytes

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