Malicious PDF — malware analysis report

Static analysis result for SHA-256 2059dfa4381cda4b…

MALICIOUS

PDF

42.2 KB Created: 2020-10-27 19:29:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: cf0b25f8ae584daf1f4fbfbb01f0409a SHA-1: 4dd9b5b480c45609a47acc9820e974f4ae1f8e42 SHA-256: 2059dfa4381cda4bcc49ea724c3e3f22c4a241534927235a3391d2a6cbb8ade6
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.link/123?keyword=cubic+zirconia+engagement+ring+settings In PDF document text
    • https://kezobonuduwu.weebly.com/uploads/1/3/4/4/134457579/c04ad433a5665.pdfIn PDF document text
    • https://narogigadi.weebly.com/uploads/1/3/0/8/130874066/c2099e721b.pdfIn PDF document text
    • https://detosujedeke.weebly.com/uploads/1/3/4/3/134371576/959474.pdfIn PDF document text
    • https://pasuliwipo.weebly.com/uploads/1/3/1/4/131452824/tisovexig-kowudibafo-namel.pdfIn PDF document text
    • https://numomepezudoti.weebly.com/uploads/1/3/4/3/134320197/4234abb16a32.pdfIn PDF document text
    • https://fuparududewon.weebly.com/uploads/1/3/1/8/131856041/jovefuxatodelixibu.pdfIn PDF document text
    • https://norumevi.weebly.com/uploads/1/3/0/9/130969469/sexilegazafib_revobilokofisor.pdfIn PDF document text
    • https://repafajekojila.weebly.com/uploads/1/3/4/3/134305679/050f6fc4cc153.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384301/normal_5f94a2bb6c348.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412889/normal_5f9597eae4e0a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369173/normal_5f87dda28f537.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366014/normal_5f96feef5b191.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366311/normal_5f87157227cbd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417988/normal_5f9583811ffab.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368240/normal_5f8c48ceac960.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388596/normal_5f96bdad63e19.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off0000654e.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off0000654e.bin)
    • https://uploads.strikinglycdn.com/files/4d543b8f-8eb8-4258-a446-d72a78dcc04a/ganisulegavomexu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9825/1170/files/tcash_wallet_apk_mod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/8546/6267/files/73291501027.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/8891/3592/files/ejercicios_resueltos_de_gases_ideales.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 extracted file (font_00_sfnt_off0000654e.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000654e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x654E 5180 bytes
SHA-256: c62329d48d79f754a95f23c6525174863681ae00e4ba342c2677d124099ae0af
font_01_sfnt_off000076d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76D5 10656 bytes
SHA-256: f8e50e8694d6c6b15488f14516355a3c0986b40ef93a758a9afcf5efa1f47180