Malicious PDF — malware analysis report

Static analysis result for SHA-256 60de2911196650f4…

MALICIOUS

PDF

120.8 KB Created: 2021-04-17 02:55:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 800db4b656646a0250f06b40f231a9b3 SHA-1: 5e91b0f357d68af5c6d66a65e94dd14267ea6167 SHA-256: 60de2911196650f47db31d780ab4f16ff5b34d503daa4aeca06d8f4dbb926a9f
186 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 6

  • 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 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.
  • 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://soxebez.ru/strik?utm_term=03+polaris+sportsman+500+wiring+diagram PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4408464/normal_606259aa388a0.pdfIn PDF document text
    • https://cdn.sqhk.co/mejomusajob/agdjhs4/best_cotton_flannel_sheet_sets.pdfIn PDF document text
    • https://cdn.sqhk.co/dowusutitozi/fieyjhV/54601251035.pdfIn PDF document text
    • http://bazegal.iblogger.org/libebuzupenudenalulitajip.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384325/normal_5fc62ef9b1195.pdfIn PDF document text
    • https://cdn.sqhk.co/feketukadoz/hfgcgfj/amazon_home_services_bed_assembly.pdfIn PDF document text
    • https://cdn.sqhk.co/kakezesarop/hhjhggh/cgp_ks2_maths_question_book_answers_online.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459629/normal_5fdb0d5134b77.pdfIn PDF document text
    • https://cdn.sqhk.co/zafilivopupu/crjhB1W/boss_2_dj_song.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465025/normal_602071ea50c93.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jatomije.rf.gd/que_se_necesita_para_viajar_fuera_de_estados_unidos.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/06e8860e-c80e-4c1d-b77d-01979fe2bdea/fesexeveg.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/07067a4c-bced-4dae-ac3b-d8a00f425c60/zuxibofe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c5974da8-4c84-4c78-8508-dbce08b4a3f5/rca_rt2911_reset.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ca4d52ec-0228-41af-9a5c-33f1ee31c2fb/what_is_the_value_of_a_2015_equinox.pdfIn PDF document text
    • http://zepurudevivo.rf.gd/kind_of_houses_worksheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3e61c252-44c1-4c8c-878a-0496b130b94d/27045888184.pdfIn PDF document text
    • https://2791e1c6-719d-47aa-bdc5-1556df251b63.filesusr.com/ugd/7757c5_70cf242aa36146dd94f90732b49daaf7.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/f3f80018-2d3c-4371-a2d9-ab1334596583/the_river_garth_brooks_instrumental.pdfIn PDF document text
    • https://5fb3b2f4-e86d-4029-b823-ac5950ddf4c1.filesusr.com/ugd/c0aa49_f157d858a3924182b4f23c3e4d304011.pdf?index=trueIn PDF document text
    • https://ff0b3df2-dc61-4aeb-9024-93fa9b5bc175.filesusr.com/ugd/aa14a9_d87bcba3799247a6854c954d9da6bd6d.pdf?index=trueIn PDF document text
    • https://8e12fe21-47c1-448c-af9e-883e7c84523b.filesusr.com/ugd/52ac5e_de06795960e84e52841e38b26e23225e.pdf?index=trueIn PDF document text
    • https://368051e9-4199-40ea-b9a2-dc6e6f83cb3b.filesusr.com/ugd/6260fe_fe9b3fbfec5349859db565546fd3910a.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/d22d7870-ed45-469e-8b3f-34a5de6d533c/galileo_800x60_refracting_telescope_reviews.pdfIn PDF document text
    • http://fanofajuduma.rf.gd/complete_tutorial_microsoft_excel.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_off00019a3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19A3D 5704 bytes
SHA-256: b7eb11956526c474dbd93c3fbf089b9a8f992fd8c85c9850aa8afc77529ac016
font_01_sfnt_off0001ada3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1ADA3 11660 bytes
SHA-256: efe547dbb7952274e782a3b671f631ace83ae9f709e30fbd69b7cc3f1417c3fb