Malicious PDF — malware analysis report

Static analysis result for SHA-256 4cf0089005f0e510…

MALICIOUS

PDF

43.9 KB Created: 2020-10-25 11:43:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: 3cf28a15fe75b1e5fa45479eedd2201b SHA-1: fd132a4b5386b4c37f3f9ed5348f2e488559ae09 SHA-256: 4cf0089005f0e510d59b4d559ddee719489c7bd487db04252475493e5885e724
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links pointing to various PDF files hosted on Weebly and other platforms. One of these links, 'https://gettraff.ru/strik?keyword=micah+ecumenical+ministries+inc', is flagged as a malicious redirector. This suggests the document is part of an SEO poisoning or link farm scheme designed to drive traffic to malicious sites, potentially 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/strik?keyword=micah+ecumenical+ministries+inc In PDF document text
    • https://gewaxuselez.weebly.com/uploads/1/3/4/2/134265722/sikepowakiku-gumuzovona-joxufedagumi-pepeta.pdfIn PDF document text
    • https://sewuvemap.weebly.com/uploads/1/3/4/3/134377394/xomewuxufilivogi.pdfIn PDF document text
    • https://zirufifun.weebly.com/uploads/1/3/0/8/130874679/8824083.pdfIn PDF document text
    • https://wilewefat.weebly.com/uploads/1/3/4/2/134234777/e23d932.pdfIn PDF document text
    • https://rolosakuzorega.weebly.com/uploads/1/3/1/3/131379035/7a015d.pdfIn PDF document text
    • https://gusumadanu.weebly.com/uploads/1/3/2/6/132695601/b7841d6.pdfIn PDF document text
    • https://panidulupeju.weebly.com/uploads/1/3/0/9/130969186/merinorasaniv_nidikurawi_ketexirup.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388611/normal_5f9516652c673.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367668/normal_5f93953e961c7.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/1/0500/2441/5382/files/sewatowelipozuxutexudep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/7439/0678/files/sotegajaselipetabefuj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0504/8280/6964/files/folding_napkin_into_swan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/6898/3969/files/98670633164.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/6636/6363/files/16877447395.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1682/8581/files/1_4_pint_equals_how_many_ounces.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9376/1956/files/pic_editor_apps_for_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/4723/8811/files/practice_tests_for_the_toefl_ibt.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4711/6191/files/descargar_spotify_gratis_para_android_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0494/0031/6060/files/assessment_of_nutritional_status_during_pregnancy.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1373/3534/files/51184818202.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0475/3073/7830/files/cafetera_oster_3301_manual_uso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0488/0053/0597/files/7995243965.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_off00006c0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C0A 5044 bytes
SHA-256: 648ce5df71eadcc7b05bc703385dfaaab902e5c8c4d800e347eadaac911f7192
font_01_sfnt_off00007d01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D01 11112 bytes
SHA-256: 6bcb3fe14f1aba029066434afbbb6981efaf08267e3ff1ad5823160e4edc793c

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