Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca262e0bf8bb1749…

MALICIOUS

PDF

79.5 KB Created: 2021-03-02 23:59:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 954cda23ee949352a0a072b7af3d69c1 SHA-1: 7d1ce1471f41bdbc33e5c2705cd8aaf17c9a503d SHA-256: ca262e0bf8bb1749d6f3aa85e9b5114129c3fe8fcdd9fc74cbd4634512809615
126 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a ML classifier and ClamAV, indicating malicious content. It contains numerous embedded URLs, with one pointing to 'fokemale.ru', suggesting a phishing or malware distribution attempt. The PDF_SEO_DISPOSABLE_LINK_FARM heuristic indicates the document is designed as a link farm on disposable hosting, reinforcing the malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://fokemale.ru/strik?utm_term=advaita+vedanta+pronunciation PDF link annotation
    • http://websporizle3.com/xusetixirerogataxb0e4b.pdfIn PDF document text
    • http://hookup757.fun/24949838911jtr99.pdfIn PDF document text
    • http://limecash.xyz/34114815336wcrqe.pdfIn PDF document text
    • http://opensalon.xyz/22008693511qhzlm.pdfIn PDF document text
    • http://hrushch.space/dungeons_and_dragons_monster_manualeii54.pdfIn PDF document text
    • http://microbladingcertificationdfw.org/what_is_process_cloud_servicetvlg1.pdfIn PDF document text
    • http://istlan.fun/reading_comprehension_practice_worksheets_for_5th_grade69u8z.pdfIn PDF document text
    • http://my-favshopf.online/elementary_linear_algebra_by_howard_anton_11th_edition_solution_manual7yakk.pdfIn PDF document text
    • http://mon-cmb.best/osha_safety_data_sheet_template_2019l9u8r.pdfIn PDF document text
    • http://barashik.space/51750604399a35ye.pdfIn PDF document text
    • http://japancar-sib.ru/desigual_mens_size_guide23xur.pdfIn PDF document text
    • http://salonapp.xyz/dosenumupowewedegojakg6ux3.pdfIn PDF document text
    • http://matrixbicycles.com/gosorixuxefegroaaj.pdfIn PDF document text
    • http://lienforkid.com/verb_forms_v1_v2_v3bnk6k.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • http://wuxejosijaja.epizy.com/pumezesetuwisigulidubekaj.pdfIn PDF document text
    • http://xogeguf.rf.gd/monster_synonyms_in_japanese.pdfIn PDF document text
    • http://rutuvofogiseba.epizy.com/wulugaxerupebobuvize.pdfIn PDF document text
    • http://kofujuluzode.epizy.com/22186238020.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cf9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF9F 3312 bytes
SHA-256: ac66ddecb1889e99694234647e4a1e19b6174440e696c9ee44c6cb9711419273
font_01_sfnt_off0000db80.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB80 4788 bytes
SHA-256: c1095a8d297432a3e33e44277130ac325ecc41857ee6660cc9f153b55334df8d
font_02_sfnt_off0000ebcd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBCD 10536 bytes
SHA-256: cf93ff400983d0329cc5c7280e444ab5039561ea4be2dff2259d6c2e06d38772
font_03_sfnt_off00010ef9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10EF9 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34
font_04_sfnt_off00011cfa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11CFA 4552 bytes
SHA-256: 2389969d9639a70644d622c610b171d8a02922afb3041c022a08e25744be2938