Malicious PDF — malware analysis report

Static analysis result for SHA-256 6fc241790a646cf3…

MALICIOUS

PDF

49.8 KB Created: 2020-08-15 04:46:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d17bd131a8c365165246350f4f106083 SHA-1: c1a9a84b02c9411362d6a1ae3b67f7bb157c3bf6 SHA-256: 6fc241790a646cf399ceb2bcdc90cb353ef5d35813daa155eda4713310e7c9a6
162 Risk Score

Malware Insights

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

The PDF contains embedded links that lead to a redirector service, which in turn points to a malicious domain. The document body, though heavily obfuscated, contains text suggesting a 'business loan agreement form' lure, combined with a 'Click here to download' phrase, indicating a phishing attempt. The presence of numerous external PDF links, many pointing to Shopify domains, suggests a link farm used to obscure the malicious redirector.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=business+loan+agreement+form+pdf
    • http://nobopuzok.easterndistrictbudgie.com/uploads/1/3/1/6/131637881/a41cc0653.pdf
    • http://files.imamoneymaker.com/uploads/1/3/1/6/131607163/jibujebokik-jawegedukasus.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0431/5152/4008/files/45825680811.pdf
    • https://cdn.shopify.com/s/files/1/0431/7567/4014/files/konupukutetef.pdf
    • https://cdn.shopify.com/s/files/1/0433/7431/3621/files/69291125407.pdf
    • https://cdn.shopify.com/s/files/1/0434/5564/3813/files/jewololebunefezovod.pdf
    • https://cdn.shopify.com/s/files/1/0433/5874/8837/files/96993361067.pdf
    • https://cdn.shopify.com/s/files/1/0432/1673/2320/files/68481102221.pdf
    • https://cdn.shopify.com/s/files/1/0433/3712/1951/files/64029899745.pdf
    • https://cdn.shopify.com/s/files/1/0435/2137/6410/files/83950694747.pdf
    • https://cdn.shopify.com/s/files/1/0440/6745/5128/files/84475647551.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007057.bin
0444d0e9b888489b2dae49b76432207d3aea1c9a14b5af30a5e933cf519fa1b1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7057 5292 bytes
font_01_sfnt_off00008239.bin
87583559f8cc0b7b75f21db69b61acce2a8709ebccfa284354b241240ae7b069		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8239 13352 bytes
font_02_sfnt_off0000aca5.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xACA5 4324 bytes

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