Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa69fa039b9ed507…

MALICIOUS

PDF

79.0 KB Created: 2021-05-07 11:53:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: f2468b8c5db21bc8f499e714cbd57954 SHA-1: ef5070b748e4842ed3814a6c3b2054330c741d52 SHA-256: fa69fa039b9ed507e2f920952e9338366c64672092ec6cc330c756b871c109c4
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://yafferge.ru/strik?utm_term=clinical+mental+health+counselor+salary+in+california'. This indicates the document is designed to lure users to a potentially harmful website. The ML classifier also strongly flagged this PDF as malicious, supporting the conclusion that it is part of a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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://yafferge.ru/strik?utm_term=clinical+mental+health+counselor+salary+in+california In PDF document text
    • https://cdn-cms.f-static.net/uploads/4480382/normal_606171e400384.pdfIn PDF document text
    • http://nikibolerobika.getenjoyment.net/around_the_world_in_80_days_book.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4483075/normal_5fce49687d51d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368487/normal_5ffe9bf69639f.pdfIn PDF document text
    • http://nirenodeba.medianewsonline.com/chordata_book_free_download.pdfIn PDF document text
    • http://nefupanono.mygamesonline.org/makalah_tentang_amandemen_undang_undang_dasar_1945.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379984/normal_5fd8e8d9463b2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4377379/normal_5fdf010c9ea6c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458412/normal_605f5862913fb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405202/normal_602ec2d34ccd4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451566/normal_5fe43923e39a5.pdfIn PDF document text
    • http://likujamozajowu.22web.org/91860624339.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407085/normal_605532c8299dd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485823/normal_5fcfa8648b40a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4467573/normal_5fc7c3d939b3e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jisunopesaluzi.atwebpages.com/starting_an_airline_business_plan.pdfIn PDF document text
    • http://zibevili.onlinewebshop.net/zawivez.pdfIn PDF document text
    • http://luvigewe.rf.gd/59062132624.pdfIn PDF document text
    • http://limirosu.rf.gd/37046454810.pdfIn PDF document text
    • http://wukazuvogupe.epizy.com/morality_definition_philosophy.pdfIn PDF document text
    • http://zirexig.epizy.com/bsf_constable_application_form_2019.pdfIn PDF document text
    • http://dabemekos.epizy.com/xazajajanabanite.pdfIn PDF document text
    • http://fekobovovexi.epizy.com/aetna_dental_insurance_claim_forms.pdfIn PDF document text
    • http://minuvuri.epizy.com/mi_guia_para_resolver_el_curso_aprendizajes_clave_preescolar.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_off0000f857.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF857 5128 bytes
SHA-256: fe4867621d6434162a2f33ed4c0406e91b180dbcf31553d483951679961209e9
font_01_sfnt_off000109a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x109A3 10652 bytes
SHA-256: 4834f08dff6c01b3b811128ff974de22e051be822163408a8512a048bdc22b1c

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