Malicious PDF — malware analysis report

Static analysis result for SHA-256 cfc7fbf4e8ebeaa9…

MALICIOUS

PDF

75.7 KB Created: 2021-03-20 07:02:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 1d058205769a400af5653532290571ca SHA-1: 1736fd3c8a05a6aed7e9d8b4d343d09df63e3b70 SHA-256: cfc7fbf4e8ebeaa9278840de32c3c4b06685c5a935e4cd2d1f5317e14a1860c9
126 Risk Score

Malware Insights

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

The PDF file contains multiple embedded URLs pointing to suspicious domains, indicating a phishing or malware distribution attempt. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' suggests the document is part of a link farm on disposable hosting, further supporting malicious intent. The ML classifier and ClamAV detection strongly indicate maliciousness, likely related to phishing or a trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://lozipotod.ru/award?keyword=les+albums+de+tintin+en+pdf PDF link annotation
    • http://eglo.club/zibalenupijewodizustg3jc.pdfIn PDF document text
    • http://normab-id.com/841811252689i3nb.pdfIn PDF document text
    • https://nadaxujapowa.weebly.com/uploads/1/3/4/8/134891343/cc6cb7bd1204.pdfIn PDF document text
    • http://mastera-saydinga.ru/keleboxigizofojixowurizobyvdas.pdfIn PDF document text
    • https://wetejitaxazis.weebly.com/uploads/1/3/4/3/134306742/012e3eae85.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403565/normal_5fc628901b75f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368747/normal_6007d0ebb2340.pdfIn PDF document text
    • http://rukozhop-guide.com/sdg_e_matrix_bill_pay5covp.pdfIn PDF document text
    • http://goods-amzon.com/36162421522mand2.pdfIn PDF document text
    • http://reduslimitaly.website/gewivokukevonalafojajx154r.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/1b623040-81b5-4fae-8735-aada893b86b0/risasudileluz.pdfIn PDF document text
    • https://s3.amazonaws.com/xepululejiwof/1155306350.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8429235d-f005-4ad7-bb74-b7dceabd13a7/cissp_all-in-one_exam_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/264d5124-77de-4d0f-98a1-2fe7b2a8b08b/pokemon_sun_and_moon_legendaries_ultra_beasts.pdfIn PDF document text
    • https://s3.amazonaws.com/vatosolikijike/94095258993.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b2783e49-08d2-497d-a899-73b2b5b8c037/22317549656.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_off0000e791.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE791 5172 bytes
SHA-256: 8ee24b5425b635158f62fd7d847a8d56e2950e0f8dedec3f27a6fd01c9aae357
font_01_sfnt_off0000f918.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF918 12028 bytes
SHA-256: cb34c92f092bf8a36fbaf928111896f173b3d674ed19552d1dbb9323fd71a913

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