Malicious PDF — malware analysis report

Static analysis result for SHA-256 ac0fa9748fa17e75…

MALICIOUS

PDF

62.8 KB Created: 2020-11-05 16:23:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: 79c45801b34d3c82495ba71904dba1ac SHA-1: 7fb114b66011c3507d1dd5a723f9b0bcfd22b38c SHA-256: ac0fa9748fa17e7585c241341155243edf838acbb807e4767a23a5b2d8d90f63
116 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • 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/strik?keyword=tamilnadu+power+finance+interest+rate PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4379237/normal_5f8bb1a3e1df8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/zomuzigo/56187125895.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ebe1d515-afb8-40b9-ae27-c671081965d6/64436680690.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1eb6e4ee-3493-4f7e-b692-f4b51c3dd052/labokidesejavem.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/24535aa1-9234-4c1e-8f20-ceed45b74cd5/midwest_messenger_form_contest.pdfIn PDF document text
    • https://s3.amazonaws.com/wisuw/fapasoveg.pdfIn PDF document text
    • https://s3.amazonaws.com/memul/sbac_practice_test_7th_grade_math.pdfIn PDF document text
    • https://s3.amazonaws.com/jobavo/seaview_village_brooklyn.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bcfe95a4-69b0-4901-a3d9-f54e8f2ac367/pititasivenuso.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d52bd54f-3d49-4477-bbff-b86945a18032/jodegojisadakiw.pdfIn PDF document text
    • https://s3.amazonaws.com/wilugugo/kirozikumopeki.pdfIn PDF document text
    • https://s3.amazonaws.com/tadovu/59735344654.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a9a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA9A0 5224 bytes
SHA-256: ae2576732cbbf62757414f096dea246a5f111472f6c2dd88697182c165770e10
font_01_sfnt_off0000bb53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBB53 10800 bytes
SHA-256: 9dbb7e32aadad2678e7ef72e578b756310312a69a894473aa276dd8c0698217a
font_02_sfnt_off0000e01a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE01A 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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