Malicious PDF — malware analysis report

Static analysis result for SHA-256 3b34272779a1bf3f…

MALICIOUS

PDF

72.3 KB Created: 2021-02-26 04:49:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: b582169b10a64b591055b327a0b14339 SHA-1: f18455578769a8954bf640cc1eabe58a9046cadd SHA-256: 3b34272779a1bf3facc1a25c81823ab12f8d55bf1fb7491c032f85b83e7c52e7
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://leonvi.ru/award?keyword=why+is+my+netgear+powerline+not+working PDF link annotation
    • http://xazufajemexeb.22web.org/xurunu.pdfIn PDF document text
    • https://fozaronu.weebly.com/uploads/1/3/5/3/135349809/gezuxadakarareda.pdfIn PDF document text
    • https://cdn.sqhk.co/ruzemesafe/jfjhJ0K/dropper_map_for_mcpe.pdfIn PDF document text
    • https://cdn.sqhk.co/dodiniwotud/4mEgh47/80585089673.pdfIn PDF document text
    • https://cdn.sqhk.co/bugolajoxodu/jcZ7Vhf/cat_simulator_mod_apk_2018.pdfIn PDF document text
    • https://cdn.sqhk.co/nomelafu/IiaBvgZ/gangmasters_licensing_act_2014.pdfIn PDF document text
    • https://cdn.sqhk.co/lebogomatoze/7oaMgiN/neonatal_high_flow_nasal_cannula_definition.pdfIn PDF document text
    • https://cdn.sqhk.co/xumesapaxoku/hjjg1P2/mo_candy_mod.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/fizup/material_costing_format_in_excel.pdfIn PDF document text
    • https://s3.amazonaws.com/dowavelaxam/gikitagigomivedefurare.pdfIn PDF document text
    • https://s3.amazonaws.com/goneduzum/81688175633.pdfIn PDF document text
    • https://s3.amazonaws.com/sinamozagemoger/boss_film_ke_gane_mp4.pdfIn PDF document text
    • http://zefinut.rf.gd/57717766011.pdfIn PDF document text
    • https://s3.amazonaws.com/rabewiruzitewa/cetera_investment_services_forms.pdfIn PDF document text
    • http://sutakepaxiru.epizy.com/moleskine_smart_pen_user_manual.pdfIn PDF document text
    • http://filevixe.rf.gd/filezilla_server_windows_xp.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_off0000dd59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD59 5504 bytes
SHA-256: fa0459f349adb34bc0cfc43a53dd7c9ac1c2c90a04a8b10f06953a8162c04476
font_01_sfnt_off0000f006.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF006 10520 bytes
SHA-256: ad447b05d3404ff9e5db313e66cc7e126c9bccb15661927884621aa2888fdaf9