Malicious PDF — malware analysis report

Static analysis result for SHA-256 7dfe6227217d3c35…

MALICIOUS

PDF

41.8 KB Created: 2020-11-04 10:23:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 035bf2fd5ebf910d184ec6a4f91b650d SHA-1: 7d8e08f1eb2636252a0b836750a6e6993d5ac3f2 SHA-256: 7dfe6227217d3c354dc7364a6431faafe0e4745946f6790ebc097eb57255b5f5
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body also contains the same lure text and URLs, suggesting an attempt to drive traffic to malicious sites, likely for phishing or malware distribution. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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.
  • 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://cctraff.ru/123?keyword=wwe+2k19+locker+codes+ps4 In PDF document text
    • https://sumulejuno.weebly.com/uploads/1/3/4/3/134361372/c92203e3646.pdfIn PDF document text
    • https://vebifejelib.weebly.com/uploads/1/3/0/7/130775119/xekusoxu.pdfIn PDF document text
    • https://mizuzakulidux.weebly.com/uploads/1/3/4/4/134471721/vifaxazim.pdfIn PDF document text
    • https://jawasolasazilem.weebly.com/uploads/1/3/1/3/131379174/zidebesirolabavo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366337/normal_5f875ebe1f443.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372980/normal_5f9b949771405.pdfIn PDF document text
    • https://zubajabazu.weebly.com/uploads/1/3/4/4/134466761/ca6348c071692c.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/vufupu/warhammer_40k_ork_codex_8th_edition_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e46fc076-03b8-435e-8179-b56a9a12cf79/freeborn_county_jail_phone_number.pdfIn PDF document text
    • https://s3.amazonaws.com/sukedil/74420193595.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a111710a-66cd-400e-b842-9e387d77b64b/86762804772.pdfIn PDF document text
    • https://s3.amazonaws.com/vuraradaso/newusufunolabivadet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2ef8e274-f11b-46ee-a940-3f00a12ff9fe/majipavow.pdfIn PDF document text
    • https://s3.amazonaws.com/ditiruz/netgear_wnce3001_manual.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_off00006400.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6400 5456 bytes
SHA-256: c6f54ddd02cb490b002cc56541b8db7ab68fe9946a4058639e82c5ad4440e8f2
font_01_sfnt_off000076c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76C7 10676 bytes
SHA-256: c8ec930af7a8b0eecccc7281599cbc8b9c53eacb8cfa5608f634f8ae6b64e232

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