Malicious PDF — malware analysis report

Static analysis result for SHA-256 36a4fbcbf68c657c…

MALICIOUS

PDF

65.5 KB Created: 2021-03-06 10:52:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 43687638c925b10af8069a98f5b763e6 SHA-1: 6181eea64660e3d6f7c2a3b4ab20f805c06a4c17 SHA-256: 36a4fbcbf68c657c0ac6dd5beed84e122e607572e183722713cf9d340d4db1b6
126 Risk Score

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://seumenha.ru/award?keyword=jen+wilkin+1+peter+bible+study+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4376374/normal_5fe3df96af9b6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4443809/normal_5fe254f400570.pdfIn PDF document text
    • http://remeik.ru/86593204487xfgki.pdfIn PDF document text
    • http://golden-charm.ru/276285078638dfys.pdfIn PDF document text
    • http://kleomaften.online/30410434618poiob.pdfIn PDF document text
    • http://xesubixuj.iblogger.org/sazobifixopolusufe.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/tixeligufokup/84348035409.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/772410df-ef11-4958-a676-bd26d63cf850/1294053882.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2f0e8138-bc04-4ed9-b853-e10ec4733d10/new_media_advertising_campaigns.pdfIn PDF document text
    • http://nidubopavoxu.rf.gd/91107310245.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/142868a1-ca6f-4e3c-b403-addbe836bd64/52593395709.pdfIn PDF document text
    • https://s3.amazonaws.com/farowug/12620933772.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/baa4ad87-99b6-4903-a4c1-71e346b9065d/how_to_switch_to_hdmi_on_jvc_tv_without_remote.pdfIn PDF document text
    • http://tumosavosaruw.rf.gd/19018296884.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/236e9dce-004b-4ed1-a8e3-68bbe1ab1e7e/39414485786.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2f89fa8e-0604-42c0-983f-944a4d3cd7a7/14527888426.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3b5ef84e-a687-439a-ab2c-258d6cee1e3d/what_is_an_easy_to_understand_definition_of_economics.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_off0000c4d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC4D7 5264 bytes
SHA-256: 37d572fce900459f98057b4c9b576e65d0ffaa5fe6ff23af5c147746773d2b4f
font_01_sfnt_off0000d6e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6E7 9928 bytes
SHA-256: 0497bff4a2c21cebc02b39f778994e708c2ba89c11ff8ab3e54e2f878c427c42