Malicious PDF — malware analysis report

Static analysis result for SHA-256 bff8afbe5c3ef974…

MALICIOUS

PDF

60.0 KB Created: 2020-12-20 21:43:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: d498a6912e7695c8fa2b13a0c5c79f55 SHA-1: 5b6f83a5de81ae2f99f26b9de89c53ce4d724047 SHA-256: bff8afbe5c3ef9742aa160cc01b179f1e7b834d30ac339a5ae8751042a62888b
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://traffnew.ru/123?utm_term=error+733+directv+ecuador PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4413701/normal_5fa7eae689947.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475728/normal_5fb01e9388300.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484093/normal_5fbcd5f02f476.pdfIn PDF document text
    • https://xezevatev.weebly.com/uploads/1/3/4/7/134730214/fapiwuzajejuk-gugiz-pemogizifefek-joneburibonajo.pdfIn PDF document text
    • https://metapuxin.weebly.com/uploads/1/3/4/6/134633213/lazik.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/be8f9bc7-234b-4665-8b27-8e9f05cc3592/depakuvekenogode.pdfIn PDF document text
    • https://s3.amazonaws.com/vifusupegiza/botidizixapizufavojuvarep.pdfIn PDF document text
    • https://s3.amazonaws.com/wusone/bhangra_empire_song_djpunjab.pdfIn PDF document text
    • https://s3.amazonaws.com/wukara/besando_sapos_y_mordiendo_manzanas.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc13aebf7cf8c75402d1f76/t/5fc5d0613485235c86905296/1606799459520/lunuroruxifaroxe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e24c3d59-9c1c-494c-94fa-bc70120e2f26/pathways_1_listening_speaking_and_critical_thinking.pdfIn PDF document text
    • https://s3.amazonaws.com/wamatasamegu/btech_malayalam_movie_tamilrockers.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf4f2fe6d49a06bb8861cc/1606373168370/cold_steel_trailmaster_carbon_v.pdfIn PDF document text
    • https://s3.amazonaws.com/nitajosasa/occult_hepatitis_b_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/lolijexejomak/ma_public_administration_ignou_books.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_off0000b015.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB015 4984 bytes
SHA-256: 302d1bcec2e8601e0d771fb5737f397a474cd688f07fb077ccf8ca42e479f3b4
font_01_sfnt_off0000c125.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC125 9988 bytes
SHA-256: 27b6637b30875379f5aaca8eb27b6ed4aeb4bf8b510ce23eced827e08df9a216