Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0dc88b0d7cdaf63…

MALICIOUS

PDF

46.9 KB Created: 2020-10-08 18:41:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 08cf7bd6b9454ecedc8d1051fcd20798 SHA-1: e71de4cb1fcf7db0e7fb88b585d04e4affc1612e SHA-256: e0dc88b0d7cdaf639aec475894e918616dac71759168983acdeed4d0ea394c9f
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link that redirects to a known malicious domain, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The ML classifier also flagged this PDF with high confidence. The embedded link is designed to lure users into clicking by disguising itself as search results for wedding dresses, a common social engineering tactic.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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://ttraff.club/pify?keyword=jessica+mcclintock+wedding+dresses+1998 In PDF document text
    • http://files.joeridubbe.com/uploads/1/3/0/7/130776363/3d98dcea7a4.pdfIn PDF document text
    • http://files.designshowcaseeast.com/uploads/1/3/1/4/131453715/tevitagazige.pdfIn PDF document text
    • http://pokewegep.opticalonlinestore.com/uploads/1/3/2/6/132681394/2396877.pdfIn PDF document text
    • http://gixefux.gminstitutes.com/uploads/1/3/0/7/130775997/6333903.pdfIn PDF document text
    • http://files.ranjithmanoharan.com/uploads/1/3/0/7/130775674/pogupagikinapidukem.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/9320/7461/files/channel_divinity_5e_turn_undead.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7192/2591/files/straight_cable_color_code_rj45_cat6.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/75709430-928d-4e31-a909-1e1ca9a18459/gapekapis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/55c7d420-2907-4d5a-b645-f1f47c3c4cc9/48862308398.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e1f849c1-bacd-4ccc-aef3-6f895acc6171/81351489280.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/be40e0c7-00a6-4fe0-8da5-790f783cfb48/xokibudolev.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a0e5f9d2-49bb-4699-adcd-4a6f9f0e1d15/33633531471.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/28430a73-4876-4dc4-8a93-18b0f2152ab4/nejezavemuniwej.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_off0000722b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x722B 5804 bytes
SHA-256: 879a9e2529c33493a52da4ab53ccff9ee02576dab7898ca9450d9c2b192304ec
font_01_sfnt_off000085ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85ED 12676 bytes
SHA-256: 511fc424c1641057129b8cb275f2226bdef150afdba7f61da93a07a4e8584661