Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2ee404210da4fe5…

MALICIOUS

PDF

70.7 KB Created: 2021-02-12 08:29:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: adc53d8d3b0d8e6d52a4bca719a8e563 SHA-1: 1b4e17aa50d79cc5abd096224489aa8aa461b295 SHA-256: b2ee404210da4fe5309b9a65979cc9fa30d632dbeb069206ad825929bf0c4f77
256 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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.
  • Brand-impersonation credential phishing lure critical SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: action link to abused redirector https://zapotaputilaka.weebly.com/uploads/1/3/2/6/132683001/780682a4ee051f8.pdf.
  • 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://baarspo.ru/wix?keyword=yahoo+mail+not+showing+all+emails+chrome PDF link annotation
    • https://zapotaputilaka.weebly.com/uploads/1/3/2/6/132683001/780682a4ee051f8.pdfIn PDF document text
    • https://cdn.sqhk.co/filovosa/ejcthEV/harvard_business_review_costco.pdfIn PDF document text
    • https://puwaxitakobesod.weebly.com/uploads/1/3/4/1/134109073/dexubonisa_texisel_sularomawevat.pdfIn PDF document text
    • https://cdn.sqhk.co/mugapowejog/jjiiIjf/44680601779.pdfIn PDF document text
    • http://doxugivo.22web.org/73291817879.pdfIn PDF document text
    • https://gawotajar.weebly.com/uploads/1/3/4/5/134525297/3676328.pdfIn PDF document text
    • https://kimuremosov.weebly.com/uploads/1/3/4/7/134732255/3677512.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/suxuzubojut/mathematics_project_proposal.pdfIn PDF document text
    • https://s3.amazonaws.com/xazarujokemus/comment_assembler_des_gratuitement.pdfIn PDF document text
    • http://zobawukesilebaf.epizy.com/bill_gates_quotes_information_technology.pdfIn PDF document text
    • http://pupisovid.epizy.com/react_native_typescript_cheat_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/bogijexu/imodium_drug_guide.pdfIn PDF document text
    • http://rovututuxopi.epizy.com/alucobond_construction_details.pdfIn PDF document text
    • https://s3.amazonaws.com/dosalapasenow/holt_mcdougal_algebra_1_answers_chapter_2.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_off0000db4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB4B 5264 bytes
SHA-256: 7ade33916fcf1b602b290356c2c3c4ce01e3b6bcd989b6178eee0d6b216fe155
font_01_sfnt_off0000ed1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED1D 9608 bytes
SHA-256: 46c7a864c4555407c7bc2df50528d9a7c808739c3f1d3bd3cb5e87633d9d9c1f

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