Malicious PDF — malware analysis report

Static analysis result for SHA-256 a246d12ed03a8e0c…

MALICIOUS

PDF

40.2 KB Created: 2020-08-12 05:46:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 551720c06e5889ba3ede7043d38c8441 SHA-1: 5ef5e9c4db8306842a0eff28480416cf11e216b5 SHA-256: a246d12ed03a8e0c0acfe8a9536c952e571eca60db84a924fcee535a169dea34
120 Risk Score

Malware Insights

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

The PDF contains a link disguised as a 'Samsung side by side refrigerator manual' which redirects to a known malicious infrastructure. The document also exhibits characteristics of a link farm, embedding numerous other PDF links, many hosted on Shopify. The primary malicious URL identified is ttraff.cc, which is flagged as a malicious redirector.

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.cc/wb?keyword=samsung%20side%20by%20side%20refrigerator%20manual
    • http://files.highelevationwrestling.com/uploads/1/3/2/7/132740214/6c8a77f.pdf
    • http://files.lemoyne.org/uploads/1/3/2/7/132740747/7194360.pdf
    • http://dolatux.wackenbergs.com/uploads/1/3/1/4/131454526/diwozuwojixegigosiv.pdf
    • http://files.rosalindwhitephotography.com/uploads/1/3/1/3/131383649/7e102a9820.pdf
    • https://cdn.shopify.com/s/files/1/0433/5511/1589/files/lokurarerag.pdf
    • https://cdn.shopify.com/s/files/1/0431/7410/1160/files/79437824277.pdf
    • https://cdn.shopify.com/s/files/1/0430/9054/2753/files/tokugufufogonozekogepezid.pdf
    • https://cdn.shopify.com/s/files/1/0434/2772/5474/files/desafovapipesuvutikune.pdf
    • https://cdn.shopify.com/s/files/1/0432/5690/5885/files/48481050307.pdf
    • https://cdn.shopify.com/s/files/1/0431/8127/7342/files/58671758012.pdf
    • https://cdn.shopify.com/s/files/1/0433/1008/8360/files/wadabeguwenave.pdf
    • https://cdn.shopify.com/s/files/1/0429/1746/2182/files/jugudixasivasimivuxe.pdf
    • https://cdn.shopify.com/s/files/1/0438/9247/4011/files/88903894353.pdf
    • https://cdn.shopify.com/s/files/1/0433/9014/0581/files/kabubo.pdf
    • https://cdn.shopify.com/s/files/1/0429/3846/6467/files/basibizomaf.pdf
    • https://cdn.shopify.com/s/files/1/0440/0391/7974/files/king_crimson_songbook.pdf
    • https://cdn.shopify.com/s/files/1/0431/1177/6416/files/treatment_of_pneumonia.pdf
    • https://cdn.shopify.com/s/files/1/0432/2567/7982/files/bojizizawe.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_off00005d9f.bin
fcec7a250b7046ab657f12f4540df597752a5f766479f620f0a583f3442b20dd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D9F 5572 bytes
font_01_sfnt_off00007072.bin
a531284ecdb22d24f21c6292c29675dbf61c2e96928e247a80786679df289115		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7072 10228 bytes

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