Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2a215aeeaa0fd8d…

MALICIOUS

PDF

45.0 KB Created: 2020-10-28 23:23:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 5a0f9b9fef9dc9db735170623b6d6fe5 SHA-1: d4e89f321bb39d5e8ad8a42fd2f758e6c723e016 SHA-256: e2a215aeeaa0fd8d28dafdebd1a01d7bd1a312a39d1f8551a577b2978515f4c1
184 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs, many of which point to disposable hosting or known malicious redirectors. The primary malicious URL identified is https://ggtraff.ru/strik?keyword=ee+guide+ib+pdf, which is flagged as a malicious redirector. The document's structure and content suggest it is designed to lure users into clicking these links, likely leading to further malicious content or phishing attempts.

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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://ggtraff.ru/strik?keyword=ee+guide+ib+pdf In PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/jasamejug-jenutuzudemeluf.pdfIn PDF document text
    • https://rulafusojuxibaw.weebly.com/uploads/1/3/4/2/134265871/4295017.pdfIn PDF document text
    • https://rezomiwutamanap.weebly.com/uploads/1/3/4/3/134362688/1026079.pdfIn PDF document text
    • https://gekeforoka.weebly.com/uploads/1/3/1/4/131438206/gixojulala-fuzonosa-lejabivugonoli.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387243/normal_5f98d82a0d252.pdfIn PDF document text
    • https://lesofetu.weebly.com/uploads/1/3/1/3/131378838/b3f15256.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373239/normal_5f9207a12749b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383795/normal_5f8f05a317f2a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368952/normal_5f8cb17997de5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419828/normal_5f990a76d3c1f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4394073/normal_5f96c6c591f43.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4394077/normal_5f9348b61d5f9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393893/normal_5f95de8ba7703.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367905/normal_5f877e59ea3eb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375344/normal_5f8b5a76aa0de.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/a6be7c39-8b3f-4ccf-869c-781f3dd470fe/rironapaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0225/5770/files/contacts_from_iphone_to_android_bluetooth.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/7888/4759/files/woreruzogi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/9150/0449/files/46400351886.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8f2d923e-fb7b-4736-a3da-9a68dfd6a990/60607883434.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/183d79af-36e2-48d7-8dd0-bcb58745d7bf/jilofademabugato.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/2199/8501/files/sap_gui_7.40_download_for_mac.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/8304/5293/files/wumiw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/9272/0798/files/nebewotipujazikupibat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/9114/1801/files/21653183545.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9ecdeb5c-9c46-40a5-a28b-45a0e6ac93a7/la_suite_de_fibonacci_explication.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_off00007293.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7293 4788 bytes
SHA-256: b64d19fd568f47af9d0820b3208381f2a312681c6135127d8832a091d19616a7
font_01_sfnt_off000082f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82F8 10380 bytes
SHA-256: 7167d73535b5558ccbf04a5198074a3bfef0ef72f4b2c45330ee4fd268d815d3

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