Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d65897ec7749da9…

MALICIOUS

PDF

70.1 KB Created: 2021-03-03 20:08:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: a76768989c236fe176c5dbadae9f4bc8 SHA-1: 285245afd7768bcb28161f74d8383e679f49a4f9 SHA-256: 5d65897ec7749da991606c9c05e99a23011801ac1a24e22b3795a2c5d7955483
136 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
  • 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://midufefew.ru/wix?keyword=100+more+100+less+worksheets+2nd+grade PDF link annotation
    • https://nonejekorozu.weebly.com/uploads/1/3/4/1/134108542/7276979.pdfIn PDF document text
    • https://miwevedadig.weebly.com/uploads/1/3/1/4/131437981/2906660.pdfIn PDF document text
    • https://difanewoxapazu.weebly.com/uploads/1/3/5/3/135321324/6130875.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486045/normal_5fcc29865e10e.pdfIn PDF document text
    • https://lolozodosut.weebly.com/uploads/1/3/1/6/131606575/6324922.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451047/normal_60215ce128356.pdfIn PDF document text
    • https://cdn.sqhk.co/terodekijur/Zjfiigh/vikurarojalixamefu.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/ninasivol/cfa_level_1_exam_pass_rates.pdfIn PDF document text
    • https://s3.amazonaws.com/petuzutemixuvod/55100082002.pdfIn PDF document text
    • https://s3.amazonaws.com/dudurat/chicka_chicka_boom_boom.pdfIn PDF document text
    • https://s3.amazonaws.com/varolexexus/can_we_read_sundara_kandam_during_pregnancy.pdfIn PDF document text
    • https://s3.amazonaws.com/mipeboro/adding_fractions_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/kopisigapub/manualidades_con_papel_de_seda_y_cartulina.pdfIn PDF document text
    • https://s3.amazonaws.com/zinudipir/mn_attorney_registration_cle_reporting.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_off0000d48a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD48A 5628 bytes
SHA-256: 1e20ba5544e87a4fe73c09accf3997ac78663ef52cf0fe66596e1006ed21295d
font_01_sfnt_off0000e797.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE797 10308 bytes
SHA-256: c7215cb96bad6b6a95957dba461190b5bb5ab7561499f99356cba016b812de61