Malicious PDF — malware analysis report

Static analysis result for SHA-256 a3ea5e7df04e006d…

MALICIOUS

PDF

69.5 KB Created: 2021-02-18 14:38:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: b5f7c052e5984d212784794de0b26d47 SHA-1: 4af8b9c1dabd4c15a9aafac2427b883d57a82f0b SHA-256: a3ea5e7df04e006ddfe29422d02c7124dc8ae4abaf017eedcf40b04b8231c212
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://bologen.ru/wix?keyword=module+3+study+guide PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4482208/normal_5fe50b2c5a893.pdfIn PDF document text
    • https://titugujogimob.weebly.com/uploads/1/3/4/0/134017720/zesirugodasodupaso.pdfIn PDF document text
    • https://zazibarem.weebly.com/uploads/1/3/0/7/130775746/zikuxem-rulibawekujotet-viwaxo.pdfIn PDF document text
    • https://pizovepe.weebly.com/uploads/1/3/5/3/135323062/fc2eab20460.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/lepefi/54924827088.pdfIn PDF document text
    • https://s3.amazonaws.com/vavabi/ballerina_leap_full_movie_free.pdfIn PDF document text
    • https://s3.amazonaws.com/dotivaf/new_audit_report_format_2017_icai.pdfIn PDF document text
    • http://gisinazujawapub.epizy.com/30487344068.pdfIn PDF document text
    • https://s3.amazonaws.com/xomepixo/contract_example_template.pdfIn PDF document text
    • https://s3.amazonaws.com/jenisozazewubo/carpet_cleaning_risk_assessment_template.pdfIn PDF document text
    • https://s3.amazonaws.com/daxemo/sikijov.pdfIn PDF document text
    • https://s3.amazonaws.com/jepavilutabilel/fire_emblem_three_houses_battalion_guide.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_off0000d565.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD565 4960 bytes
SHA-256: 254cec2714f365c023e32eb7d6525a1876fa4b7ff22b4a738cf51183329e2a9a
font_01_sfnt_off0000e673.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE673 10408 bytes
SHA-256: 6c8bed217da63d66aa59a3b99ebe6251e5f3562f6b7546f712a624fb10f3f4a9

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