Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4ef18d4f7f32a71…

MALICIOUS

PDF

66.5 KB Created: 2021-02-25 00:28:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: c187013fe75725e40e526e2ca6e53d47 SHA-1: 32a7889999051b73bdd8b327afbd3735af9b05a7 SHA-256: a4ef18d4f7f32a71e9f7a0e6ce102f690e31c884d2c495e697c6cf9044666f79
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://jottigo.ru/award?keyword=cancion+jesus+mi+fiel+amigo+mi+dulce+caminar PDF link annotation
    • http://nipokaxa.getenjoyment.net/83119289840.pdfIn PDF document text
    • https://finedogu.weebly.com/uploads/1/3/4/7/134749629/6759892.pdfIn PDF document text
    • http://figojusu.iblogger.org/taxes_subsumed_under_gst.pdfIn PDF document text
    • http://love-your-lips.online/dsc_832_master_code7xe09.pdfIn PDF document text
    • http://mon-compte-cmb.best/733732637726ps5a.pdfIn PDF document text
    • https://voranafirodibug.weebly.com/uploads/1/3/2/6/132696030/difewefokut.pdfIn PDF document text
    • https://nevajuto.weebly.com/uploads/1/3/2/6/132695651/37d32437a6ce.pdfIn PDF document text
    • http://rajukilodagoje.mygamesonline.org/64760908101.pdfIn PDF document text
    • https://xuvupidorok.weebly.com/uploads/1/3/1/4/131407629/4161384.pdfIn PDF document text
    • http://fineagencyy.com/nixon_the_sentry_ss_star_wars_watchv66zs.pdfIn PDF document text
    • https://xisubuto.weebly.com/uploads/1/3/1/3/131380177/6860039.pdfIn PDF document text
    • https://gifukupuwabe.weebly.com/uploads/1/3/0/7/130775529/765caf8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://livugaxoretedop.epizy.com/82732120036.pdfIn PDF document text
    • https://s3.amazonaws.com/miledu/apc_back_ups_rs_700_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/tojabixefova/64658798719.pdfIn PDF document text
    • https://s3.amazonaws.com/bulikowexunepov/spotify_apk_premium_gratis.pdfIn PDF document text
    • https://s3.amazonaws.com/tazopaju/assignment_of_contract_form_indiana.pdfIn PDF document text
    • http://tutalisog.rf.gd/what_is_a_mystical_experience.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_off0000c395.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC395 5320 bytes
SHA-256: 06fd1c1d57dcbd09e1bdbcb243629f0e74c08c6df86d8ac7ea3589438c34f50e
font_01_sfnt_off0000d59a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD59A 11564 bytes
SHA-256: dddfd738cf5606274156aa8204862e3c360832b5940c529941bbb4c9edc5891f