Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec51eccf04ea1cff…

MALICIOUS

PDF

39.8 KB Created: 2020-08-23 21:26:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 47e5529d5093a9a98581e4ffee50823b SHA-1: 991edc26ce512d570081e8ecd730e8d0d7b0e066 SHA-256: ec51eccf04ea1cff1384302b7590d6fa62040d1da8a0e0ea503381ad379cc3ac
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector at ttraff.com. The document body, though heavily obfuscated, contains the URL that leads to the malicious redirector, suggesting a lure to a phishing or malware distribution site. The presence of numerous links, including the malicious one, indicates a link farm strategy to obscure the ultimate destination.

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=delaware+chancery+court+practice+guide
    • http://files.empathies2017.com/uploads/1/3/2/3/132303269/mavagif.pdf
    • http://files.sweetlypaired.com/uploads/1/3/1/3/131383586/1196122.pdf
    • http://files.lucindalyonsfineart.com/uploads/1/3/1/4/131408864/9917893.pdf
    • https://cdn.shopify.com/s/files/1/0428/0185/6668/files/spinal_cord_injury_file.pdf
    • https://cdn.shopify.com/s/files/1/0436/0205/1229/files/57861693876.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nadogenomaxijedunebenez.pdf
    • https://cdn.shopify.com/s/files/1/0429/9715/3943/files/lezoliraxu.pdf
    • https://cdn.shopify.com/s/files/1/0433/8365/2506/files/dofapurexisiku.pdf
    • https://cdn.shopify.com/s/files/1/0430/7392/9378/files/89019643461.pdf
    • https://cdn.shopify.com/s/files/1/0432/1030/9787/files/47583725478.pdf
    • https://cdn.shopify.com/s/files/1/0432/2649/7182/files/39412968133.pdf
    • https://cdn.shopify.com/s/files/1/0433/7005/3784/files/kfyr_weather_radar.pdf
    • https://cdn.shopify.com/s/files/1/0430/9748/9572/files/is_vpn_worth_it.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_off00005db8.bin
9146012798feba0f5d9fa9f19cd60a81633d4d347b1f8cdb6f221e91a5b6c8e8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5DB8 5352 bytes
font_01_sfnt_off00006ffb.bin
d2a1de914ebac0fafe25590328ee958872000eef66a6f05b5dd84d1a495f05ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6FFB 10192 bytes

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