Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2b510e37563fb5a…

MALICIOUS

PDF

53.8 KB Created: 2020-10-28 01:55:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 4c99497886f6efb8222297155a30e956 SHA-1: b94e8db71bf6f70db4f94a5510d3bab2e192e610 SHA-256: c2b510e37563fb5a69883d7c9e7155b32b9f99d6fd6e16e33235d63d04aea3fe
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains a large number of embedded links, many of which point to disposable hosting and redirector services. The primary malicious link identified is `https://gettraff.ru/strik?keyword=land+of+the+goblins+quick+guide`, which is flagged as a known malicious redirector. The document's structure and extensive link farm suggest an attempt to drive traffic to malicious sites, likely for phishing or malware distribution.

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://gettraff.ru/strik?keyword=land+of+the+goblins+quick+guide In PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/xewuj.pdfIn PDF document text
    • https://gevafitasib.weebly.com/uploads/1/3/1/3/131380901/a7b88.pdfIn PDF document text
    • https://riragojefo.weebly.com/uploads/1/3/1/8/131857115/gonapasufenepowuwuli.pdfIn PDF document text
    • https://jokineviraxara.weebly.com/uploads/1/3/4/2/134265776/vexitekive.pdfIn PDF document text
    • https://mapipuluzobeb.weebly.com/uploads/1/3/1/3/131398440/joniwuf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385028/normal_5f9542501c58a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366033/normal_5f8897e3a6d27.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367960/normal_5f894a791a6d9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373983/normal_5f972dbc20906.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/85c699d1-55d0-4b69-b612-06c5ebe61f44/16480516669.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ac3910b8-8f0f-440d-8f7b-83d279ade2d3/jeranulomuzisopipepe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/62c7b1f7-86ac-475a-bf37-ac84b587fe14/komoxivogaridixuzusoz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7f513bb4-9bd5-498c-837f-34109c08bff8/jexevokekaxa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0476/7481/8726/files/turbo_pascal_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/4743/4440/files/5845705045.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0268/8575/0966/files/48382021558.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4584/6168/files/government_unit_4_study_guide_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/kavitokolezub/mafovax.pdfIn PDF document text
    • https://s3.amazonaws.com/xanebavifamopez/90366486604.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files2/business_report_sample.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0268/7716/5741/files/gemojutewegopufawogefinoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8307/0629/files/euripides_the_bacchae.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/7869/6094/files/opti_farms_keto_trial.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9212/2527/files/dodge_ram_emblem_tailgate.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007deb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DEB 5456 bytes
SHA-256: 1035ed9f359594083f0a6c1fda2a4fcf764febb14113273deb0fe8e128c1d6bc
font_01_sfnt_off00009078.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9078 10408 bytes
SHA-256: 3413640464f4fe87e1ede54f81651a6accb147a181258f1fda69afd2533f1b7d
font_02_sfnt_off0000b44a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB44A 16140 bytes
SHA-256: 159427b32ed66bfbde86def5e6c2992bde67dfb25400c4000a37c9b59b949b61

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