Malicious PDF — malware analysis report

Static analysis result for SHA-256 e126009f52bbe8c4…

MALICIOUS

PDF

69.7 KB Created: 2020-11-18 04:49:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 0e5c9d1d9963caad26b100cbafd41b1c SHA-1: 4e7f7ba938bc62a38ceda0f1fdc4c6e09b762e60 SHA-256: e126009f52bbe8c4ad8f6a822804641b5ad79f1adc6639995e52bdb1d21276f9
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://ggtraff.ru/123?utm_term=que+es+variable+en+una+investigacion In PDF document text
    • https://cdn-cms.f-static.net/uploads/4421056/normal_5fa74891c13e7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392668/normal_5f9bd2d6b739f.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/3619d653-94cd-410e-a4d5-b74869b01210/xuxewodizibe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/93681de6-0073-4af1-b837-96c666901e42/toyota_prius_0_finana_uk.pdfIn PDF document text
    • https://s3.amazonaws.com/vixuwogetiv/engineering_drawing_book_in_hindi_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6decce6c-90d2-40d8-96fe-b7adfa44fe44/elements_of_petroleum_geology_3rd_ed.pdfIn PDF document text
    • https://s3.amazonaws.com/wilugugo/86742160580.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/77d73e2e-48fd-41f9-95fa-1a1f2782783a/54455820930.pdfIn PDF document text
    • https://s3.amazonaws.com/vatosolikijike/whatsapp_status_song_videos.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a7d28671-c702-4dbc-a665-d153f7d98db2/fodux.pdfIn PDF document text
    • https://s3.amazonaws.com/tetazino/44008701810.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b719b8a3-2238-4a8d-bfdd-3cd4d2adf3bf/area_code_1112.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_off0000d3b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3B3 5228 bytes
SHA-256: 58f7c68e9388d713b9ee60b9ff932f52e503e0d7d740ef742a965b06e966fd2f
font_01_sfnt_off0000e596.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE596 10932 bytes
SHA-256: fc2f97decc3d2e120f7307c98f0dbbb23871b0344166e7a455dad303177df1b0