Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c6489c18d07b5c6…

MALICIOUS

PDF

66.9 KB Created: 2021-02-15 17:48:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: bb3262032aaad5ded89eeae55b315cdc SHA-1: fd3a7db3fb91090affebe97f08630669c6a03e9e SHA-256: 2c6489c18d07b5c63f026554bee32b47e1d950239437918e3c289bdcb3ae311e
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://bologen.ru/wix?keyword=nostalgia+popcorn+machine+instruction+manual PDF link annotation
    • http://vebafaguxaw.22web.org/28778640057.pdfIn PDF document text
    • https://kagoninu.weebly.com/uploads/1/3/1/4/131453226/jududakarefawepaja.pdfIn PDF document text
    • http://laura-egorova.ru/sujinadujifav21j.pdfIn PDF document text
    • http://idealica-italy.site/80th_birthday_party_invitations_templatesf7g8j.pdfIn PDF document text
    • https://rotalexabif.weebly.com/uploads/1/3/1/3/131381819/fbf9a349d0.pdfIn PDF document text
    • https://sibibogug.weebly.com/uploads/1/3/5/9/135990875/sekalisumusexud.pdfIn PDF document text
    • http://carinsrates.com/proform_345s_crosswalk_treadmill_wonyww5c.pdfIn PDF document text
    • http://spainsale.pro/809617978028uez1.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/somamere/absorption_spectroscopy_method.pdfIn PDF document text
    • https://s3.amazonaws.com/warapagefasovi/90725096776.pdfIn PDF document text
    • https://s3.amazonaws.com/nafoxuda/xolobalirodufitomazumiliw.pdfIn PDF document text
    • http://sirowozikuko.epizy.com/android_emulator_adb_device_unauthorized.pdfIn PDF document text
    • https://s3.amazonaws.com/filidabut/cds_exam_form_fill_up_2018.pdfIn PDF document text
    • http://mowelafawugek.epizy.com/damagekerapirofup.pdfIn PDF document text
    • http://kirotomi.epizy.com/cassie_ventura_songs.pdfIn PDF document text
    • https://s3.amazonaws.com/dovulavavo/73390227432.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_off0000ca5c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA5C 5316 bytes
SHA-256: 9f161c300e9ecb70543271ccfb42ea375327581bf02136293396084fef89e6fd
font_01_sfnt_off0000dc49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC49 9912 bytes
SHA-256: b46bdbdac9b667967faa7d3db9f23fd80e8a074e70c7818a21f4862e9fcc8c8f