Malicious PDF — malware analysis report

Static analysis result for SHA-256 01765146e617ab5c…

MALICIOUS

PDF

65.9 KB Created: 2020-08-26 06:52:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: af009cc524d96321dbe4c0b3a19627b5 SHA-1: f03d0b93f96fcb0ca909c1975177a9db02aa50f6 SHA-256: 01765146e617ab5ca80443a9cb8fb37956cb126ecf8eb5eb22498a6c3a0670ec
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many of which point to a redirector service known for malicious activity. The document body itself contains a URL that is also flagged as a malicious redirector. This suggests the document is designed to lead users to malicious websites, likely for further exploitation or phishing.

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.me/pify?keyword=the+vampire+diaries+season+8+episode In PDF document text
    • http://fisozew.travelinol.com/uploads/1/3/2/6/132681947/506c8e3195178bb.pdfIn PDF document text
    • http://files.lovelepink.com/uploads/1/3/1/4/131407665/vekanafetividige.pdfIn PDF document text
    • http://files.zilutech.com/uploads/1/3/1/4/131452991/fovigafagepazi_manodovadi.pdfIn PDF document text
    • http://poveru.360defensemartialarts.com/uploads/1/3/1/4/131437774/276789.pdfIn PDF document text
    • http://files.connectiveimpact.com/uploads/1/3/1/3/131379382/f8b5eb.pdfIn 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/1/0438/2192/4514/files/division_worksheets_grade_5_no_remainders.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8576/6564/files/amour_sucre_episode_23_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7905/7056/files/12836628008.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5768/4385/files/walukadivugezezaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8652/0224/files/38758947842.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8227/6250/files/jiruzulu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5901/9933/files/fobajisu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2232/5672/files/cilia_and_flagella_structure_and_function.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1814/9285/files/nawiropulukerenetivu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6281/1031/files/6438292538.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_off0000bad5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBAD5 5368 bytes
SHA-256: 6334c409e8488f72bafda83ebae43a146c0132f9a1b4cab861e09ad0d300d087
font_01_sfnt_off0000ccfc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCFC 14532 bytes
SHA-256: ad147763e588aab86c594bbdbf91c469eba15ec221fdaacdce977b350b7d37ac

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