Malicious PDF — malware analysis report

Static analysis result for SHA-256 694f25a906b4eddc…

MALICIOUS

PDF

43.1 KB Created: 2020-10-07 11:53:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 240fea9e9205ed995c44fa3cc97b5b12 SHA-1: 9aa4f1bd98fe5086dd16badb51ac90fb2afd9aff SHA-256: 694f25a906b4eddceff55627fdc3db0e11988baeafeb020c8a9ba3d13f85ba79
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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=devil+in+the+grove+pdf In PDF document text
    • https://site-1037149.mozfiles.com/files/1037149/lurojo.pdfIn PDF document text
    • https://site-1037283.mozfiles.com/files/1037283/pifuxojagedode.pdfIn PDF document text
    • https://site-1037074.mozfiles.com/files/1037074/sowugigoxen.pdfIn PDF document text
    • http://sijipezip.truththrutruth.com/uploads/1/3/0/7/130738711/2410726.pdfIn PDF document text
    • http://files.buildingtogrow.com/uploads/1/3/1/3/131380616/5abac3.pdfIn PDF document text
    • http://files.argumentcritique.com/uploads/1/3/1/4/131437174/tekot_gowusuxuna_jobobofo_guraxuvolugu.pdfIn PDF document text
    • http://files.doreenleafdesigns.com/uploads/1/3/1/4/131406449/jofimekanubata_vesotarop_jazuxuj_nusezebuzaxorip.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/7900cb1c-2b06-4c51-8038-9ae7a9250471/97099995963.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f1ea26b0-c40d-431e-9cef-090dfec1d65a/vepoxaxosapomel.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b9bb55c0-5818-4f77-83f4-a29e74bee79c/popusegum.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e55fa526-930b-4167-b610-259e84f5a9ef/69051012233.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8fd6492c-8c98-4ad2-b32c-6d83cc9657fa/mebul.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/be102f09-b1dd-48f5-9a47-5d4f6e0dd592/doxuwaxakavupudo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0dc4e6a0-bafc-4da7-a22d-07bdff20002d/58388553012.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6bfacba4-0f26-4b47-9bef-05fc262e6d1a/7233078339.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_off00006c2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C2B 4976 bytes
SHA-256: 3b2af5907eea94738b52ada215fff85a0bd9f59d4eb5c897be450d0f67a4ca51
font_01_sfnt_off00007d21.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D21 10108 bytes
SHA-256: 47db9f5eb20440f2355233f4c0f076a2d0ce8bf6f48b8cde40cf67fcf9a4324a

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