Malicious PDF — malware analysis report

Static analysis result for SHA-256 df72b74de4f931c9…

MALICIOUS

PDF

45.9 KB Created: 2020-08-17 04:38:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: baad28df869a9f1dc39297f38343ecb5 SHA-1: a5c75603a55c64091376596dee54dd10bd1d712a SHA-256: df72b74de4f931c975fabca2b87b1bb52e78c077a4fb1e1b95d7d83376e4bc9c
150 Risk Score

Malware Insights

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

The PDF was flagged by multiple critical heuristics for containing malicious redirector links and a link farm. The embedded URLs, particularly the one pointing to 'ttraff.com', are indicative of a phishing or malware distribution scheme. The ML classifier also strongly supported a malicious verdict. No scripts were extracted, but the PDF structure itself is the delivery mechanism.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=ability+beyond+annual+report
    • http://files.ohiodesign.com/uploads/1/3/1/4/131453288/9fda472b.pdf
    • http://vajobago.patsmeatmart.com/uploads/1/3/0/8/130873826/loroseruxezelu.pdf
    • http://files.blue-eyedbuffalo.com/uploads/1/3/0/9/130969301/regolela.pdf
    • http://files.headsuprivertowns.com/uploads/1/3/2/6/132695714/9542a.pdf
    • https://cdn.shopify.com/s/files/1/0433/0645/1094/files/familias_de_hemiptera.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/28650507632.pdf
    • https://cdn.shopify.com/s/files/1/0431/0489/5143/files/12507023857.pdf
    • https://cdn.shopify.com/s/files/1/0431/0381/3781/files/86003855722.pdf
    • https://cdn.shopify.com/s/files/1/0432/6916/1110/files/97269136768.pdf
    • https://cdn.shopify.com/s/files/1/0440/0395/0742/files/anticonceptivos_colombia.pdf
    • https://cdn.shopify.com/s/files/1/0431/4896/8090/files/zipujutimebumiduv.pdf
    • https://cdn.shopify.com/s/files/1/0431/5820/8674/files/wuton.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006a20.bin
7b7b401d5b6ddc067032b9583f4800bad1a1543a66e80c47ac2fbbedabe877cc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A20 4888 bytes
font_01_sfnt_off00007abc.bin
d26609919b46c461fdca8e42930e7a672616247191c31a8d223a8f6dc4cb7010		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7ABC 9952 bytes
font_02_sfnt_off00009cbc.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9CBC 4324 bytes

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