Malicious PDF — malware analysis report

Static analysis result for SHA-256 e07fa9474bcc6b54…

MALICIOUS

PDF

137.6 KB Created: 2020-08-20 18:27:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: f9238c549ed4c9931d9f2868f5e9cf19 SHA-1: 7e30fe2747da850b23589f99f32a43a0a84a1315 SHA-256: e07fa9474bcc6b5403bb21ccc07559ce5973ce940dae433440dc9bf152057c30
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=kaleidoscope+ray+bradbury+pdf'. This URL is likely used to direct users to malicious content. The document also exhibits characteristics of a PDF link farm, with numerous external links, many of which are benign Shopify URLs, but the primary malicious link is the clear indicator of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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.cc/pify?keyword=kaleidoscope+ray+bradbury+pdf In PDF document text
    • http://zigixuv.amanzadeh.net/uploads/1/3/2/7/132741031/lodeganumebuna.pdfIn PDF document text
    • http://faxuxug.soduparentsposse.com/uploads/1/3/2/7/132741508/987569.pdfIn PDF document text
    • http://files.nicholaspessarra.com/uploads/1/3/1/4/131453858/fepesalutifoso-xapofime-luropekefivesi.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/1/0431/2740/6746/files/66694059564.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gowavofopinesifaremoka.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7917/2257/files/15001950875.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/99203043279.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9508/9559/files/22216738114.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6407/3128/files/pemex_business_plan_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/29878061118.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7510/7990/files/83177841430.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3506/5505/files/munolefasejen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8198/1347/files/bezekoxarigun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0852/3416/files/functional_analysis_download.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_off0001e3f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1E3F5 5360 bytes
SHA-256: 535309d3d31a653ad1fa9542f6d284c2048a20a8f17dcf4ded95cea3bbda34f9
font_01_sfnt_off0001f648.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1F648 10120 bytes
SHA-256: 6a88d565b2c37a2e32324ac5adb04ae9c2e080a549ad9710dcc68153de50b522

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