Malicious PDF — malware analysis report

Static analysis result for SHA-256 a04433a35eb9bdee…

MALICIOUS

PDF

42.0 KB Created: 2020-10-14 21:32:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 6dcf336b76e51e53c346328bb25f1d7c SHA-1: 5aa96672bb494437b19896b90b01171f3b1b8de0 SHA-256: a04433a35eb9bdee3b789ee2f777eb5e62f4a9af791495e28bad27a2dea80867
124 Risk Score

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 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://cctraff.ru/pify?keyword=jacuzzi+pool+pump+manual In PDF document text
    • https://site-1040134.mozfiles.com/files/1040134/gutejudo.pdfIn PDF document text
    • https://site-1038904.mozfiles.com/files/1038904/kaspersky_antivirus_for_android_phone.pdfIn PDF document text
    • https://site-1036676.mozfiles.com/files/1036676/44234113741.pdfIn PDF document text
    • https://site-1038979.mozfiles.com/files/1038979/palojogunedukepoxezuvelag.pdfIn PDF document text
    • https://site-1038798.mozfiles.com/files/1038798/15502543453.pdfIn PDF document text
    • https://site-1048471.mozfiles.com/files/1048471/59385961648.pdfIn PDF document text
    • https://site-1038493.mozfiles.com/files/1038493/36887975107.pdfIn PDF document text
    • https://site-1037835.mozfiles.com/files/1037835/95836436834.pdfIn PDF document text
    • https://site-1038326.mozfiles.com/files/1038326/rekidigemedenaxe.pdfIn PDF document text
    • https://site-1040682.mozfiles.com/files/1040682/15226095020.pdfIn PDF document text
    • https://site-1044118.mozfiles.com/files/1044118/95910349247.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366007/normal_5f86f4a4ea72c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366010/normal_5f870cc60830b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365659/normal_5f86fa9d9c768.pdfIn PDF document text
    • https://jawasolasazilem.weebly.com/uploads/1/3/1/3/131379174/3722212.pdfIn PDF document text
    • https://boguvetasitob.weebly.com/uploads/1/3/1/3/131380850/309006dd.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/e45ee498-b7dc-4712-a873-9d9ef435912b/64924715030.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7ce8554e-9031-4686-8e5b-e268b3a90c4a/13999078278.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bbf7ae76-9448-4c3e-bc32-581aa69ccb55/37656229451.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005f41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F41 4844 bytes
SHA-256: 5fec240cee6149bfb72fc99a97c7ff419a03b5ab709d09c68c722247adf4b9a1
font_01_sfnt_off00006fab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FAB 13640 bytes
SHA-256: 0476d9f62b74f4003aaecc6feff45e4d2149273add968ffde3a8e080d9ab95c4

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