Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6e1b08b30c36357…

MALICIOUS

PDF

440.6 KB Created: 2022-04-13 23:21:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-17
MD5: 56d940d2ea77e7124eb3da1834fad184 SHA-1: 300ef9ca696ba46af84e9e98a751c7298e5d5a4d SHA-256: b6e1b08b30c36357b49822b71a54a0189c3f6ba59b4c59f2aec036b18c960131
216 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7063

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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.
  • Clickable PDF combines external action with parser-evasion structure high PDF_ACTION_PARSER_EVASION
    PDF has an external clickable URI together with object graph or xref structures that make parsers disagree, such as divergent duplicate objects, parser divergence, or xref offset mismatch. That combination is stronger than a plain link: the document is both an outward-action carrier and a parser-confusion/evasion sample.
  • 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 http://skmsm.com/userData/board/file/14779853964.pdf In PDF document text
    • https://zafasasuk.weebly.com/uploads/1/3/4/7/134713251/3677014.pdfIn PDF document text
    • http://cn-junsheng.com/upload/file///202232514893630.pdfIn PDF document text
    • https://pegujerexiwusi.weebly.com/uploads/1/3/0/8/130814209/jobulifat-zobovirubev.pdfIn PDF document text
    • https://silifasakesi.weebly.com/uploads/1/3/4/5/134510621/8098470.pdfIn PDF document text
    • http://www.tiande-global.com/ckfinder/userfiles/files/79121922966.pdfIn PDF document text
    • https://internationallanguagenavigators.com/media/65234987606.pdfIn PDF document text
    • https://taruterewun.weebly.com/uploads/1/4/1/4/141408036/mifopax-xevox.pdfIn PDF document text
    • https://rusakubasarozu.weebly.com/uploads/1/3/4/2/134266120/1058212.pdfIn PDF document text
    • https://mawurimi.weebly.com/uploads/1/3/4/6/134661678/5172724.pdfIn PDF document text
    • http://schokoladenbrunnen.de/idata/bebazoforato.pdfIn PDF document text
    • http://tecs4.com/intranet/ckfinder/userfiles/files/kikik.pdfIn PDF document text
    • https://fijateri.weebly.com/uploads/1/3/4/3/134371572/sokijiresideb-nuvesixi-mapefozesuzunop-pajuritaji.pdfIn PDF document text
    • http://uzmansporzeminkaplama.com/resimler/files/virugesovedowebukosas.pdfIn PDF document text
    • https://folobuwula.weebly.com/uploads/1/3/4/3/134374444/1396089.pdfIn PDF document text
    • https://wigufigavotafo.weebly.com/uploads/1/3/1/4/131452860/46d54174ebd.pdfIn PDF document text
    • https://lisebilapuwuw.weebly.com/uploads/1/3/4/0/134096741/nibado_dajevumigofa_fotos_sazizazogoju.pdfIn PDF document text
    • https://zawivipesanupi.weebly.com/uploads/1/3/4/7/134724715/solikobavorovib.pdfIn PDF document text
    • https://jitogomufe.weebly.com/uploads/1/3/4/5/134588764/c3e9e7a21.pdfIn PDF document text
    • https://loheb.co.za/XSRYdR1H?utm_term=fletching+guide+rs3PDF link annotation
    • 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://dejavu.sourceforge.netIn extracted file (font_00_sfnt_off00067438.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00067438.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00067438.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67438 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00068c4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68C4A 18072 bytes
SHA-256: b90d3055d6421eef37d7a8453f48918363c15489a1886018906287a34be4e067
font_02_sfnt_off0006bb83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BB83 10616 bytes
SHA-256: beece3d1979ebc2bb8929b7f0713c71d2aa67e107846ec2adc0397b213d74f65