Malicious PDF — malware analysis report

Static analysis result for SHA-256 079344bf609ebe11…

MALICIOUS

PDF

74.1 KB Created: 2021-02-11 00:37:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: c8615dd61d9e56a5049e7f32b8595918 SHA-1: 43f88ba08660a745e21d6eca2ca39e26011b6160 SHA-256: 079344bf609ebe1127ace2dc1630914ffb929a031d34db5cebc1b1f4f8ae46a8
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://crophysi.ru/aws?utm_term=css+grid+template+rows+auto In PDF document text
    • http://dle-tpl.site/jarajofodixpkp3y.pdfIn PDF document text
    • http://evilcheats.fun/drill_master_polisher_coupon2i5ut.pdfIn PDF document text
    • https://cdn.sqhk.co/zogobadakedu/wnLvThe/15938185493.pdfIn PDF document text
    • https://cdn.sqhk.co/xubulozirod/t5Hjeha/capital_funds_defined.pdfIn PDF document text
    • http://boost-shop.xyz/88387394218zjqer.pdfIn PDF document text
    • https://cdn.sqhk.co/jarogofef/hiihhgf/fijexuxonebobirit.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/ragejufa/premabhishekam_old_movie_songs_free.pdfIn PDF document text
    • http://wikugojumoxo.epizy.com/azopt_dosage_information.pdfIn PDF document text
    • http://xiluwudikipo.epizy.com/hyderabad_weather_report_video.pdfIn PDF document text
    • http://febiked.rf.gd/cationic_surfactants_list.pdfIn PDF document text
    • https://s3.amazonaws.com/jutenojamega/75524157120.pdfIn PDF document text
    • https://s3.amazonaws.com/pevuwarobuvowa/34044594544.pdfIn PDF document text
    • http://dopapaxejoj.epizy.com/sofubobukevenafu.pdfIn PDF document text
    • http://jokizexolej.epizy.com/wedimukulavu.pdfIn PDF document text
    • http://lepamiruketujuf.epizy.com/2931280461.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_off0000e432.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE432 5276 bytes
SHA-256: 1269574bb32d817e1e946ddf79249468d16ae103c63599738dfc547a6567c941
font_01_sfnt_off0000f616.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF616 11116 bytes
SHA-256: 8ce6cc4e9357960f300355d33a6a94851edd36bf68a10ea3683cd885b4a8fbb3