Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e6e124d5e9ab552…

MALICIOUS

PDF

43.5 KB Created: 2020-08-30 16:40:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3ff27b1f949db9ffa95ad42c804ff5af SHA-1: f96a167592fd1c51b616f0dbc3c83c5cfbe37900 SHA-256: 8e6e124d5e9ab5522238fbb2e42dd65d36692ceffecd556c6f5d0af9902a7fc7
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with one heuristic specifically identifying it as a 'PDF_SEO_LINK_FARM'. The primary malicious link points to 'ttraff.com', a known redirector. The document body is heavily obfuscated and appears to be a mix of metadata and encoded content, making it difficult to ascertain a specific lure. However, the sheer volume of outbound links suggests an attempt to distribute malicious content or phish users.

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/wix?keyword=sianne+ngai+nuestras+categor%25C3%25ADas+est%25C3%25A9
    • https://static.usrfiles.com/ugd/36f25b_54d5e6a06e544fdfa4b65f0add183ee5.pdf
    • https://static.usrfiles.com/ugd/b8c837_1d5a2dd33e8f4870ade6ce14afcca3b6.pdf
    • https://static.usrfiles.com/ugd/b8c837_a8d42a2cdc334486ab30289d205be209.pdf
    • https://static.usrfiles.com/ugd/b8c837_219904eb461341b78c0d4031c6bdbdb9.pdf
    • https://static.usrfiles.com/ugd/b444d4_200b828650cb41e5ab0f61d6b9d604b2.pdf
    • https://static.usrfiles.com/ugd/b8c837_90377477b0904e5ababda945b3dd6dce.pdf
    • https://cdn.shopify.com/s/files/1/0434/9722/6402/files/knee_pain_home_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0429/6137/1290/files/nopolopopo.pdf
    • https://cdn.shopify.com/s/files/1/0432/5788/8936/files/statement_of_accounting_standard_1_31.pdf
    • https://cdn.shopify.com/s/files/1/0433/2666/8952/files/19296678937.pdf
    • https://cdn.shopify.com/s/files/1/0448/5795/0370/files/kuxivumukedinozi.pdf
    • https://cdn.shopify.com/s/files/1/0429/5278/6074/files/circuit_breaker_panel_labels.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_off0000679a.bin
4a14c61811aba65a94e279ca1bdda0336737cd54f046780617270001f37fb458		 pdf-font-stream PDF embedded font (sfnt) at offset 0x679A 5232 bytes
font_01_sfnt_off0000791b.bin
3b544b8760e904943a86cddaa1dd14ef6fb75d43ac05c40ebd8215aad9d17b33		 pdf-font-stream PDF embedded font (sfnt) at offset 0x791B 11812 bytes

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