Malicious PDF — malware analysis report

Static analysis result for SHA-256 12734c0408604d49…

MALICIOUS

PDF

72.0 KB Created: 2021-02-03 16:14:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-01
MD5: 2dc6dc48595631c8a19e5cdc9b820682 SHA-1: ddef29bccaab422e4afc87b5446777ae2753d632 SHA-256: 12734c0408604d49799a346e62afcebdf83566d59263ed9c30a5e862af80d0d9
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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.
  • 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.
  • 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/123?utm_term=unit+7+study+guide+us+history In PDF document text
    • https://sezibuginodeso.weebly.com/uploads/1/3/4/4/134470526/vimoxugotizeze.pdfIn PDF document text
    • http://yandex-delivery.cc/jump_start_car_service_adelaide334f5.pdfIn PDF document text
    • https://vujafufitagizej.weebly.com/uploads/1/3/2/6/132696128/56a3f.pdfIn PDF document text
    • http://ru-1.casa/puwawodetuvexly666.pdfIn PDF document text
    • http://elinekici.online/mercury_force_120_manual7hej6.pdfIn PDF document text
    • http://itactical.xyz/angry_neighbor_2._2_apk7d50i.pdfIn PDF document text
    • http://reduslim-shopofficial.site/mizerak_chicagoan_pool_table_manual66ar0.pdfIn PDF document text
    • http://amsidisi.xyz/packed_bed_scrubber_design_calculationg5o85.pdfIn PDF document text
    • https://goxatuzibifonev.weebly.com/uploads/1/3/0/7/130739188/nilexizi.pdfIn PDF document text
    • https://bujubilefo.weebly.com/uploads/1/3/1/4/131406518/35ec6f4b623.pdfIn PDF document text
    • http://bogplaktnc.fun/blood_relation_logical_reasoning10yfg.pdfIn PDF document text
    • http://classicalnaturally.com/94661924040rec2h.pdfIn PDF document text
    • https://jifimarug.weebly.com/uploads/1/3/5/3/135319291/lopuxofamonog.pdfIn PDF document text
    • https://nemabofafuz.weebly.com/uploads/1/3/5/3/135389169/wikasisubev.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/bakoloj/35368132823.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_off0000dfcb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFCB 5016 bytes
SHA-256: 686f608779095a3f136595b7af591da5fb5d4f2a0e07f74ce990a9deb87ba816
font_01_sfnt_off0000f0e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0E7 10092 bytes
SHA-256: f4542fca24e5dd6022f007dbaaa3190c71ced54fba6f5b1808223d0553cbc31c