Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd187ac84f0565a8…

MALICIOUS

PDF

62.1 KB Created: 2020-11-12 19:09:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 4ced8474cdb36e47a023346848013ad2 SHA-1: d38a5a058c62f39599f18831abe8f45b03439b3a SHA-256: fd187ac84f0565a82402b7275e0255ccf6551a17b011fbc5d12fdbfe3ce2595e
214 Risk Score

Malware Insights

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

This PDF file contains a large number of embedded links, many of which point to redirector infrastructure. The primary malicious URL identified is 'https://ggtraff.ru/aws?utm_term=ariston+water+heater+50+liter+pdf', which is flagged as a malicious redirector. The document body, though heavily obfuscated, appears to be an attempt to disguise the malicious intent by including keywords related to water heaters. The presence of numerous external links suggests a link farm or phishing campaign designed to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://ggtraff.ru/aws?utm_term=ariston+water+heater+50+liter+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4367644/normal_5f88395c0161b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389376/normal_5f904a823909a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393883/normal_5f996c7d399ce.pdfIn PDF document text
    • https://kupugaxome.weebly.com/uploads/1/3/0/9/130969415/webuligavedike.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393754/normal_5f9ee1305e9cf.pdfIn PDF document text
    • https://zodowiburasuv.weebly.com/uploads/1/3/4/4/134448486/9846708.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460465/normal_5fab228ae200a.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/0da61aa7-249b-492b-a43a-83ca7f32d6c8/words_beginning_with_rah.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/75791e6e-7ca5-418c-9dd2-6f182a008f0d/xojukelazurefur.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b3d4e2a0-d8e0-4bf0-8fe1-ce97c97c7aa9/bupozakuxorutewalefobuk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6a120e21-b847-4f6d-ab0e-e58c8e5887c3/xejipiwubovigegapok.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/35b97632-355d-4e49-a50b-609965d807fa/latin_honor_society_scholarship.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/444828a4-7f67-4277-978f-bb754ae8a9fd/axel_schulz_rostock.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b7e4483a-61b3-4c31-81c7-19bd7b57fa01/tadopabixerikotivupa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b679ce3d-d6a4-4951-8b6e-0df2d2c1a495/target_dress_code_piercings.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_off0000b777.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB777 5476 bytes
SHA-256: c5b97243100978fd5cd6b0ba02546fda1fa9387f25d1f6aa9dd0df84cbbb4af7
font_01_sfnt_off0000ca28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA28 9868 bytes
SHA-256: 8407130e05d9738a33f1914549d9a4e6c7d2ddb1c66aff75d3432fcfcd8321a3

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