Malicious PDF — malware analysis report

Static analysis result for SHA-256 c677c5f6a12c78b1…

MALICIOUS

PDF

75.2 KB Created: 2021-03-09 05:10:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-29
MD5: 02e18348002d208ff533a1be1bc6c6f0 SHA-1: 5496bce5cf4f4de9985a96aaaf442352d6e3b317 SHA-256: c677c5f6a12c78b1c621a18ab350fb58ae88ce587ba8244048c27fbfa21e9431
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. It contains a large number of external links, suggesting it is part of a link farm or SEO manipulation scheme. The embedded URLs point to various domains, likely intended to redirect users to malicious content or phishing 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
  • 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.
  • 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://zajinet.ru/award?keyword=difference+between+horizontal+and+vertical+milling+machine+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4485809/normal_5fcb5ce1a0ba0.pdfIn PDF document text
    • http://paruxezogu.mygamesonline.org/kitchenaid_professional_600_parts.pdfIn PDF document text
    • https://fiwobezamarevev.weebly.com/uploads/1/3/2/7/132740324/pomejutamib-kujozuvufijek-vakono-movupumarisoje.pdfIn PDF document text
    • https://datedevob.weebly.com/uploads/1/3/1/3/131381982/4730964.pdfIn PDF document text
    • https://muwirejevom.weebly.com/uploads/1/3/1/8/131857435/f0bff0e4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454973/normal_60098eb32a861.pdfIn PDF document text
    • https://lusixepapage.weebly.com/uploads/1/3/4/6/134605241/sokefixubilejozowi.pdfIn PDF document text
    • http://zabolojisag.getenjoyment.net/how_to_put_together_total_gym_1400.pdfIn PDF document text
    • http://lapitubemexidi.mywebcommunity.org/88348999795.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4456378/normal_600747540de4a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459466/normal_6014d541211f1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pebeminozari.epizy.com/70127691719.pdfIn PDF document text
    • https://s3.amazonaws.com/divexikav/21059485320.pdfIn PDF document text
    • https://s3.amazonaws.com/titugome/40740882392.pdfIn PDF document text
    • http://zezatavaveb.epizy.com/aicc_full_form_in_education.pdfIn PDF document text
    • https://s3.amazonaws.com/wizuluworafid/rinavekoxal.pdfIn PDF document text
    • https://s3.amazonaws.com/pasawexawinogad/how_to_program_xr2_remote_to_vizio_tv.pdfIn PDF document text
    • https://s3.amazonaws.com/jozaponi/gavotte_violin_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/kewakuko/boss_tpsrf51_instruction_manual.pdfIn PDF document text
    • http://gujupikisikali.epizy.com/super_chhota_bheem_video_3gp.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_off0000e8d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8D4 5732 bytes
SHA-256: 42fe2ea69ed15682d58b93577050ee87464bc04204c4f3ad631efbe2db31b4da
font_01_sfnt_off0000fc53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC53 10148 bytes
SHA-256: 5d1f06971ea550e55f906739438ba8d83dea7d9e6a6c3501acb37370e1e5962a

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