Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab903bed843090bf…

MALICIOUS

PDF

43.3 KB Created: 2020-08-09 15:54:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 86a1c3cede48f396ac3db9728f14bb94 SHA-1: 7ef30478f03e7a7f809aa74333ee6ed32aaa99f1 SHA-256: ab903bed843090bf6ec4df105dad8fb64d9dccf3b753d14d98f9e1a50c23a5e0
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 benign Shopify domains, but one critical link redirects to a known malicious domain, ttraff.com. This suggests a link farm or SEO poisoning technique used to distribute malicious content. The document body, though heavily obfuscated, contains the malicious URL, reinforcing the attack pattern. 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=architecting+the+cloud+design+decisions+pdf
    • http://files.uncommongroundsmobilecafe.com/uploads/1/3/0/7/130776183/2875893.pdf
    • http://files.lifeinthetumbleweeds.com/uploads/1/3/0/7/130775859/texobogoxemikuj-siwovupi.pdf
    • http://files.eurekasecondaryschool.ie/uploads/1/3/0/8/130874180/4892be4e327.pdf
    • http://sajofivez.leadinggreendistributing.com/uploads/1/3/1/6/131607062/karujobifajorurijefo.pdf
    • https://cdn.shopify.com/s/files/1/0431/4395/4594/files/canzoniere_ukulele_gratis.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/28068876324.pdf
    • https://cdn.shopify.com/s/files/1/0430/7946/7162/files/capites_do_brasil_a_saga_dos_primeiros_colonizadores.pdf
    • https://cdn.shopify.com/s/files/1/0433/2440/7961/files/87219736421.pdf
    • https://cdn.shopify.com/s/files/1/0429/2830/8387/files/wadirizoravi.pdf
    • https://cdn.shopify.com/s/files/1/0437/2643/8550/files/sasapexafizulawapav.pdf
    • https://cdn.shopify.com/s/files/1/0447/3615/1706/files/cereal_magazine.pdf
    • https://cdn.shopify.com/s/files/1/0432/5802/0004/files/91836234203.pdf
    • https://cdn.shopify.com/s/files/1/0438/1258/5634/files/pugaxop.pdf
    • https://cdn.shopify.com/s/files/1/0429/4646/1855/files/tonopepulaba.pdf
    • https://cdn.shopify.com/s/files/1/0428/5431/8239/files/89449714839.pdf
    • https://cdn.shopify.com/s/files/1/0451/0013/8661/files/cambridge_placement_test_with_key.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_off00006b5e.bin
185ec13488c32dd71194410a3eca11b51e31c20286d30683df197963864df6fe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B5E 5196 bytes
font_01_sfnt_off00007d0c.bin
8e451fdb388641c89d89743f8465d67d7dd59d0704d13b7ff7e606de036efd56		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D0C 10300 bytes

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