Malicious PDF — malware analysis report

Static analysis result for SHA-256 094168c14a966bdb…

MALICIOUS

PDF

71.1 KB Created: 2021-02-17 08:54:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 90e5dbdb967a1a6e715270c41d1d5233 SHA-1: 8d3c7866dfa93d11d62e525bd4687c04072ff804 SHA-256: 094168c14a966bdbc769880bf668555403bd1a45de32ad622e9492bda5e81564
184 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
  • 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/wix?keyword=has+have+had+worksheets+with+answers+pdf In PDF document text
    • http://mini-cam2.club/iima_audited_placement_reportw2ynm.pdfIn PDF document text
    • http://top-shop-store.website/clipart_apron_templatebuirt.pdfIn PDF document text
    • https://nigafabap.weebly.com/uploads/1/3/4/3/134377596/pagupilaranok_putizixarugum_tiderikijiwet_kijokijunumi.pdfIn PDF document text
    • http://pl50off.info/97089228515lgi4b.pdfIn PDF document text
    • http://visezuxopusifik.iblogger.org/pefuwesumavog.pdfIn PDF document text
    • http://tolujupa.22web.org/72217049704.pdfIn PDF document text
    • http://good-production20.site/877957134693pg7a.pdfIn PDF document text
    • http://idealicaitalia-official.site/19_inch_rack_dimensions_standardj5gez.pdfIn PDF document text
    • https://faruroju.weebly.com/uploads/1/3/5/9/135986438/8551516d06.pdfIn PDF document text
    • https://wixinuwexe.weebly.com/uploads/1/3/0/7/130739185/jibifotu.pdfIn PDF document text
    • https://tariroviwobin.weebly.com/uploads/1/3/4/7/134715354/movosatobobepugav.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sevuvev.epizy.com/best_background_images_for_website_free.pdfIn PDF document text
    • http://zirofasorajama.epizy.com/black_and_decker_mini_fridge_temp_dial.pdfIn PDF document text
    • http://vapufebifuv.epizy.com/66840296183.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_off0000da73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA73 5276 bytes
SHA-256: ac017cf8cfc22eec5b3edd80980cc4432c86ba0af690de2a28f87c6fe11ccadb
font_01_sfnt_off0000ec70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC70 10136 bytes
SHA-256: d9499f5ab4c597c34d3a231bc6a695e189fdd0d5cfbedc5b829956355ce0193c