Malicious PDF — malware analysis report

Static analysis result for SHA-256 030cca1d1c585754…

MALICIOUS

PDF

38.3 KB Created: 2020-08-18 18:00:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 940bba52b00409e7b9532523f484de2e SHA-1: bb5d0b0c31855f3bbad66beabc82a83e5d1d3153 SHA-256: 030cca1d1c585754c16499a681e07ee74a616296ca238d71e11c5c8bb8663841
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for linking to known malicious redirector infrastructure, specifically 'https://ttraff.ru/pify?keyword=bookman+old+style+bold+font'. Additionally, it exhibits a PDF link farm pattern with numerous external links, many pointing to Shopify domains. The ML classifier strongly flagged this PDF as malicious, indicating a high likelihood of malicious intent. The embedded URLs suggest an attempt to lure users to malicious sites, likely for further exploitation or credential harvesting.

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.ru/pify?keyword=bookman+old+style+bold+font
    • http://files.normcaronphotography.com/uploads/1/3/2/6/132696249/7648649.pdf
    • http://files.ronaldgrayministries.org/uploads/1/3/0/7/130739072/9271725.pdf
    • http://rofudexiv.montessorieducationforautism.com/uploads/1/3/1/4/131437949/pebitosusogogarutexe.pdf
    • http://files.sfvlsa.org/uploads/1/3/1/6/131606402/819e1.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0432/6418/0390/files/x_art_password.pdf
    • https://cdn.shopify.com/s/files/1/0446/7766/0825/files/lymphoma_blood_test_report.pdf
    • https://cdn.shopify.com/s/files/1/0435/2717/6344/files/after_effects_text_animation_tutorials.pdf
    • https://cdn.shopify.com/s/files/1/0433/3712/1951/files/algas_verdes_caracteristicas.pdf
    • https://cdn.shopify.com/s/files/1/0430/0003/7527/files/javascript_tutorialspoint_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/6878/3766/files/koguvufas.pdf
    • https://cdn.shopify.com/s/files/1/0432/2846/3271/files/cours_anglais_6me.pdf
    • https://cdn.shopify.com/s/files/1/0434/6180/4197/files/viravulevavofizefitetinur.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/67142307476.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005381.bin
13819e17b2f3cada2715ca1f92b20c3c5650167ec542065639e15aaaf621685e
pdf-font-stream PDF embedded font (sfnt) at offset 0x5381 5312 bytes
font_01_sfnt_off00006587.bin
0b8a5ab1e1c57d3937000c80e8796aeca468bbfd6e9eb86abde86fc75f89693f
pdf-font-stream PDF embedded font (sfnt) at offset 0x6587 12148 bytes