Malicious PDF — malware analysis report

Static analysis result for SHA-256 4623ff7d809d1619…

MALICIOUS

PDF

52.4 KB Created: 2020-09-03 01:22:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: efff74f111bae30102b84d2897a2ed2c SHA-1: d968524b8e04450bd3c9d6a8aa11c1c18a4d6b15 SHA-256: 4623ff7d809d1619ba700a96cea0f84fc7b149a1cadacf8196c2b7bb59514beb
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links, including one pointing to a known malicious redirector at 'https://ttraff.club/pify?keyword=dc+shunt+motor+pdf'. This suggests the document is designed to lead users to malicious infrastructure, likely as part of a phishing campaign. The presence of many Shopify-hosted PDF links indicates a potential SEO link farm or content-spinning tactic to obscure the malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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.club/pify?keyword=dc+shunt+motor+pdf In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/2108/6365/files/archaeological_data.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6887/5157/files/55704381449.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9357/3288/files/german_conjunctions_list.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2051/5488/files/fijevegezikiwoniwoxe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4023/3889/files/70839008004.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2865/8848/files/cadence_tool_for_vlsi_design_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7079/9510/files/fitudavekuxutalaxave.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3886/6584/files/28109886031.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2860/3295/files/22430125057.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9465/3594/files/ragnarok_acolyte_level_up_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6795/7658/files/92217173340.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0163/4201/files/61542333332.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/fb83f1_2016a7e206a643dca4475ce2cc9c67a6.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/7ff653_35f1d3044cf44c7db88cdb996394827b.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_64da8608f610430295791fd5f31a32a2.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_33a20c2671d049069480350bf5f2db69.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b4a829_d7760a6af42b4a9f837cbd86b6aa9917.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009129.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9129 5152 bytes
SHA-256: 674fe88985846c39010357023a572b6c552bc57268be78cc463afcff67b8cfa5
font_01_sfnt_off0000a28e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA28E 10076 bytes
SHA-256: 2580a2a2c2caa4d30145ad8d256aefa3070085b1b1e28e9e36cd43e2ebb5af41

Open this report in the interactive analyzer, or submit your own file for analysis.