Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b3bbe4e8bd6a886…

MALICIOUS

PDF

43.8 KB Created: 2020-08-08 22:14:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4336154516b2f87e41732a66327f4c83 SHA-1: 39bf571e6b4032817205d75a24b2136c6f038702 SHA-256: 9b3bbe4e8bd6a8863159310b1f1d6d5920ba334cce6623342f37fad12f43139b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/pify?keyword=blumberg+form+x201+pdf'. Additionally, it exhibits a PDF link farm pattern, with many links pointing to Shopify-hosted PDFs, suggesting a broad lure campaign. The document body, though heavily obfuscated, contains the same URL, reinforcing the malicious intent. The overall pattern suggests a Business Email Compromise (BEC) lure, specifically a payment redirection scam.

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.
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise 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=blumberg+form+x201+pdf
    • http://files.giovannisdesigns.com/uploads/1/3/2/8/132814096/33e54d02cf7.pdf
    • http://files.benjamintheodore.com/uploads/1/3/0/8/130874009/31e14121b84.pdf
    • http://files.rewalsarsponsorship.org/uploads/1/3/1/6/131606431/8911366.pdf
    • https://cdn.shopify.com/s/files/1/0437/6592/3992/files/dowomata.pdf
    • https://cdn.shopify.com/s/files/1/0431/2154/1271/files/15209624137.pdf
    • https://cdn.shopify.com/s/files/1/0434/0069/1866/files/33963524810.pdf
    • https://cdn.shopify.com/s/files/1/0431/5702/9024/files/dell_r730xd_spec_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0435/8848/5288/files/up_up_and_away_song.pdf
    • https://cdn.shopify.com/s/files/1/0444/1836/7654/files/causes_of_thrombocytosis.pdf
    • https://cdn.shopify.com/s/files/1/0431/7590/3383/files/myomectomy_surgery.pdf
    • https://cdn.shopify.com/s/files/1/0434/8936/2082/files/medela_pump_in_style_advanced_manual.pdf
    • https://cdn.shopify.com/s/files/1/0430/4306/1913/files/suraxavuwekamovuxa.pdf
    • https://cdn.shopify.com/s/files/1/0433/9014/0581/files/1851939459.pdf
    • https://cdn.shopify.com/s/files/1/0437/8466/7297/files/william_foley_anthropological_linguistics.pdf
    • https://cdn.shopify.com/s/files/1/0431/4929/5770/files/14132474110.pdf
    • https://cdn.shopify.com/s/files/1/0428/7148/8668/files/35836538977.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_off00006ba7.bin
37c83bbe8a8eb6d6fd0c9e5b77167fd732fe76add44dd643ab281ee288c96122
pdf-font-stream PDF embedded font (sfnt) at offset 0x6BA7 5556 bytes
font_01_sfnt_off00007e86.bin
a39d3d444262bf4b4d41b7a12eef4071f6776577c364333301003d556cd0a2be
pdf-font-stream PDF embedded font (sfnt) at offset 0x7E86 10488 bytes