Malicious PDF — malware analysis report

Static analysis result for SHA-256 da890030f928ed35…

MALICIOUS

PDF

48.8 KB Created: 2020-10-16 07:17:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 18be4afb55455332d4551bebc76046d7 SHA-1: f8ff29e5b7e8cec043fce7859e95656d5a722956 SHA-256: da890030f928ed359863119fb30a4256a2b4560453ef2d6ff7a9117948dd29cd
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://gettraff.ru/123?keyword=emoji+de+ios+en+android In PDF document text
    • https://pepuzategazeg.weebly.com/uploads/1/3/1/4/131453576/689933586f4.pdfIn PDF document text
    • https://pezopipowom.weebly.com/uploads/1/3/1/4/131406060/fuvafiwexoxavu-zevebetugaxukag-gejenajelisowok-letazorazexonib.pdfIn PDF document text
    • https://ligofaxudatejot.weebly.com/uploads/1/3/0/7/130739538/towufulupumug.pdfIn PDF document text
    • https://rabifupokuwu.weebly.com/uploads/1/3/1/1/131164250/gidosaz.pdfIn PDF document text
    • https://babinekisifuve.weebly.com/uploads/1/3/2/6/132696104/xotusanif_todareba_monatodife.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367625/normal_5f88f31cf284a.pdfIn PDF document text
    • https://site-1048449.mozfiles.com/files/1048449/xepugomoriteguranabo.pdfIn PDF document text
    • https://site-1037003.mozfiles.com/files/1037003/76845044981.pdfIn PDF document text
    • https://site-1044018.mozfiles.com/files/1044018/47287516955.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370052/normal_5f88625813690.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365660/normal_5f8747366b169.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369935/normal_5f88bcf42a60c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365608/normal_5f88fa1e6a885.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/2a24334e-1fe3-4004-8a3f-764c96eb8118/zudinizewesegekon.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a41ef8fe-a586-4470-bd4a-1fe93436da42/65595059484.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e9ce2bd1-cbd5-431c-9015-16f2a02dac65/50004004131.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e38969d3-0821-4a94-9d6e-8d55a9f5583b/3315776225.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ed0f75fe-2dd4-4ae6-940c-4138576cc7cb/nikire.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8471164a-0a8d-4a73-aeb3-d2faa575ab43/xigilab.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_off00007954.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7954 4972 bytes
SHA-256: 0b6cf194fb155ccb68dba3b968bb80a6ee7410ea5b7f77abbfd92f67adfd6ec0
font_01_sfnt_off00008a2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A2C 14116 bytes
SHA-256: 276c07e1787ad32946f2a0abd178bbd6df8750e4c97c316fa1e36f0e12e00681

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