Malicious PDF — malware analysis report

Static analysis result for SHA-256 983c733b07f0b38a…

MALICIOUS

PDF

51.3 KB Created: 2020-08-19 12:23:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a439d7acf4794416500a3a2c023f125b SHA-1: bed859a2ae0dc22b78df06b88db7f95edfa935ab SHA-256: 983c733b07f0b38a3bbf14f35eba6498fcaa7c56562a2eaf71f0b7c577e8d132
150 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 external PDF files hosted on various domains, including a redirector at ttraff.com. This indicates a link farm or redirection strategy designed to obscure the ultimate destination. The primary malicious link identified is https://ttraff.com/pify?keyword=magistrates+sentencing+guidelines+drink+driving, which is flagged as a malicious redirector.

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=magistrates+sentencing+guidelines+drink+driving
    • http://files.newlifeagspanishfort.com/uploads/1/3/0/9/130969621/zaxatixiludalu.pdf
    • http://files.rightagri.com/uploads/1/3/1/1/131164009/9657356.pdf
    • http://files.mo-resin.com/uploads/1/3/1/3/131379828/kepunisufik_tapufajelugujex_farafamuba.pdf
    • https://cdn.shopify.com/s/files/1/0434/3654/0056/files/bezewosimixodosuvonu.pdf
    • https://cdn.shopify.com/s/files/1/0450/2549/3150/files/caries_dental_adalah.pdf
    • https://cdn.shopify.com/s/files/1/0428/9147/7159/files/78042249210.pdf
    • https://cdn.shopify.com/s/files/1/0437/4626/3201/files/84424765321.pdf
    • https://cdn.shopify.com/s/files/1/0437/1605/1112/files/extent_report_is_broken_in_jenkins.pdf
    • https://cdn.shopify.com/s/files/1/0431/3251/8555/files/75016137152.pdf
    • https://cdn.shopify.com/s/files/1/0435/2681/5895/files/53936023607.pdf
    • https://cdn.shopify.com/s/files/1/0450/8064/1699/files/wuxevalopimadujukowof.pdf
    • https://cdn.shopify.com/s/files/1/0433/3921/9099/files/zebazogamulerobe.pdf
    • https://cdn.shopify.com/s/files/1/0433/6497/4742/files/bopuwexuxoboxixevewezawog.pdf
    • https://cdn.shopify.com/s/files/1/0433/2965/0843/files/actor_jeeva_movie.pdf
    • https://cdn.shopify.com/s/files/1/0431/7908/1894/files/nulisenofekug.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_off00008a68.bin
f422fb5dd9aad399f2b0e6031a22858ed6d7b160091fe497ca24cf2f907e8576		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8A68 5236 bytes
font_01_sfnt_off00009c4e.bin
f7b2b07ee417d75c09ce26fa412ad2feb33561f5eadc02c3fbb998a37c709df0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9C4E 10544 bytes

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