Malicious PDF — malware analysis report

Static analysis result for SHA-256 55c07715f3b4ece7…

MALICIOUS

PDF

67.4 KB Created: 2020-11-10 07:52:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2022-06-20
MD5: c13aaf7aa09fac2339ff107c1e270119 SHA-1: 4754a68112cb6182576abf59d2986c965236f2b5 SHA-256: 55c07715f3b4ece73f2fa1aa5440fe25823003d236c3ce71266855f19e0e327d
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://trafffi.ru/aws?keyword=avital+5305l+installation+manual PDF link annotation
    • https://jubunukaf.weebly.com/uploads/1/3/1/4/131483214/jupefujefazina.pdfIn PDF document text
    • https://kebotufu.weebly.com/uploads/1/3/4/7/134735966/lesukikol_muzarepukasuf.pdfIn PDF document text
    • https://siwikuzovusodig.weebly.com/uploads/1/3/4/3/134357046/zusuf.pdfIn PDF document text
    • https://bugemimeme.weebly.com/uploads/1/3/4/4/134403979/72fcd1cfd7f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/261fc9c2-3338-4a27-8c03-139763803129/16038469107.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/14034dfd-faf5-4007-922a-c0f899f3e376/download_midnight_club_3_dub_edition_psp_highly_compressed.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/748ff7be-8978-4d60-a7da-27b6625341a0/20957361714.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/77e73af2-5a63-4bae-bd8c-f79469de2db5/premam_tamil_dubbed_movie_download_moviesda.pdfIn PDF document text
    • https://s3.amazonaws.com/fonazuzixagizir/14678062138.pdfIn PDF document text
    • https://s3.amazonaws.com/levumoduf/jspdf_autotable_page_break.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9e1352e9-3f55-43ff-a2cf-8f35353dd382/sabolasulexejapifegi.pdfIn PDF document text
    • https://s3.amazonaws.com/faserubafa/compound_words_worksheets_1st_grade.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_off0000c9f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9F4 5216 bytes
SHA-256: 0aa28883b245bd426658fe8168f353d3f39a473bd57a878792e2c31bb85581d4
font_01_sfnt_off0000dbac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBAC 10972 bytes
SHA-256: b7987d299fd648da41545b1738c4495190d719cad3fbc978de5bb52fa156f238