Malicious PDF — malware analysis report

Static analysis result for SHA-256 e254569231560563…

MALICIOUS

PDF

42.8 KB Created: 2020-11-02 03:38:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: ac02bae9faa95b59e45b6474ac82db26 SHA-1: a5329117de77b7323b0e91bc41c9581f48366222 SHA-256: e254569231560563da3353f1953b28603e0c48271ceabccfe66171984f705258
154 Risk Score

Malware Insights

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

The PDF contains a link farm designed to redirect users to malicious infrastructure, specifically identified by the heuristic PDF_MALICIOUS_REDIRECTOR_LINK. The embedded URL 'https://gettraff.ru/aws?keyword=free+editable+yearly+calendar+2020+for+word' is a primary indicator of this malicious activity. While no scripts were explicitly extracted, the PDF structure and link farm suggest an attempt to lure users to malicious content, likely for phishing or malware distribution.

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://gettraff.ru/aws?keyword=free+editable+yearly+calendar+2020+for+word In PDF document text
    • https://nadosivilir.weebly.com/uploads/1/3/4/3/134316305/4432241.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366376/normal_5f99179db13fc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375341/normal_5f9f59ad25b72.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/1/0478/4947/2159/files/nopiviferunutoduzosaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/2191/7086/files/action_3_launcher_plus_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/vifusupegiza/86840480717.pdfIn PDF document text
    • https://s3.amazonaws.com/kakekojezutok/cda_practice_test_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/2580/7540/files/physics_vector_worksheet_with_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/2463/6823/files/audacity_download_gratis_per_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6373/6485/files/89376600730.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/6089/4104/files/82939171909.pdfIn PDF document text
    • https://s3.amazonaws.com/regovadeje/poxarifiduxunujazurod.pdfIn PDF document text
    • https://s3.amazonaws.com/memul/rugoguwesa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0053/6986/files/font_maker_app_for_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/7853/2251/files/behaviorism_and_constructivism_difference.pdfIn PDF document text
    • https://s3.amazonaws.com/regovadeje/50747370329.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_off00006815.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6815 5400 bytes
SHA-256: 76cca1e1df9c0b6f18c29fa9b41bcd6e499bee3e6ce34478012029d0fbbc5342
font_01_sfnt_off00007aa2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AA2 10484 bytes
SHA-256: 2a2da29d249fdb9e8a81693bfc641e541d93a72eeafb6494303b584447e4cbd5

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