Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c98a6acc1439f9c…

MALICIOUS

PDF

69.9 KB Created: 2021-02-28 17:07:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 6feabac7fe232a395ffd536e846ca167 SHA-1: 80aa7623cdfe902a13533d6650c7df590c7592c5 SHA-256: 4c98a6acc1439f9c986b43031d6da7d7aab37e45d15c1fcc414eec0c51cc286c
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://golowaki.ru/wix?keyword=glabrezu+critical+role PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4494661/normal_602c79719a64f.pdfIn PDF document text
    • http://ampinternational.org/how_do_you_do_a_venn_diagram_in_math39l5y.pdfIn PDF document text
    • http://eyebrowthreadingdallastx.com/fungsi_organel_sel_hewanm1xzu.pdfIn PDF document text
    • http://pocki.top/why_does_my_bissell_not_spray_waterwnguj.pdfIn PDF document text
    • http://itawegan.fun/free_printable_halloween_coloring_sheetsyal5q.pdfIn PDF document text
    • http://arboozfilm.com/pirates_of_the_caribbean_hero_s_journeyxzluz.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/tizowodifi/xopoj.pdfIn PDF document text
    • https://s3.amazonaws.com/mipizaju/battery_doctor_for_android_2._3._6.pdfIn PDF document text
    • https://s3.amazonaws.com/nutanigonu/anglo_saxon_food_and_drink_information.pdfIn PDF document text
    • https://s3.amazonaws.com/degagaziv/numawodufinubibuwubus.pdfIn PDF document text
    • https://s3.amazonaws.com/zidenigad/20848011846.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_off0000d549.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD549 4836 bytes
SHA-256: 1b8628a1e50857c8facbe9a32a8e8f851c91662c1f81406c6330b2ff61a1da6e
font_01_sfnt_off0000e5d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5D5 11180 bytes
SHA-256: a48180fb49452281a58dad6bfc41b1637487fec161040089534eb02c07b64c68