Malicious PDF — malware analysis report

Static analysis result for SHA-256 e4379ec37c206b5c…

MALICIOUS

PDF

73.4 KB Created: 2021-02-17 06:21:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 39faab77158301dd7c50890ae65e155b SHA-1: 7b3520ce0cef9f0f98bdf89beed125a50aa2831f SHA-256: e4379ec37c206b5cdc03233a77d4982df70a34bdb65acb02f8cbab18a5171fad
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=game+of+thrones+reparto+temporada+8 PDF link annotation
    • https://gevumonalibi.weebly.com/uploads/1/3/1/1/131164272/12df984.pdfIn PDF document text
    • https://suxugugufagiwa.weebly.com/uploads/1/3/4/7/134740592/5130637.pdfIn PDF document text
    • http://fb-ig-violation.com/depreciation_expense_classified_balance_sheet4bl8q.pdfIn PDF document text
    • https://cdn.sqhk.co/sesumaku/ehcCtGw/the_roommate_movie_1984.pdfIn PDF document text
    • https://tuzunogosur.weebly.com/uploads/1/3/0/8/130815213/135f8176ae4be5.pdfIn PDF document text
    • https://cdn.sqhk.co/vazoguzo/eEdjgjf/vertigo_definition_english.pdfIn PDF document text
    • http://graatorama.space/65704952444vtg1u.pdfIn PDF document text
    • http://mushygushysayings.com/nekojewak2t1e5.pdfIn PDF document text
    • https://loguxofe.weebly.com/uploads/1/3/0/7/130775118/robaferikoliziror.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/pukiza/29899171870.pdfIn PDF document text
    • https://s3.amazonaws.com/tikofaketonub/84105986749.pdfIn PDF document text
    • https://s3.amazonaws.com/nelizenejakarug/gmail_html_email_templates.pdfIn PDF document text
    • https://s3.amazonaws.com/legesiliv/47493861711.pdfIn PDF document text
    • https://s3.amazonaws.com/zuniverijesud/74293338768.pdfIn PDF document text
    • https://s3.amazonaws.com/ruzaganog/disbursement_journal_template.pdfIn PDF document text
    • https://s3.amazonaws.com/vajefam/beltone_financial_annual_report.pdfIn PDF document text
    • https://s3.amazonaws.com/boxalewijim/electoral_dysfunction_viewing_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/wenobagupexekap/pemesivasuzalokolulod.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_off0000e082.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE082 5472 bytes
SHA-256: 09d78c462f2fdb77b528bd5a73513a28ec3b282d07135e20be9234b5ec12dc87
font_01_sfnt_off0000f2f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2F8 11044 bytes
SHA-256: 97ca0a4ad7036b5786b3c6c26eeb84484c717a4758aeb02a21f61f3037f32664