Malicious PDF — malware analysis report

Static analysis result for SHA-256 27c87e621c0a65ad…

MALICIOUS

PDF

41.5 KB Created: 2020-11-02 18:07:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-10
MD5: 48116bac4c652a5b5ee54d52f66ee7cf SHA-1: 9ace06b2628b8aa4aca0658e79734b8a559c1d70 SHA-256: 27c87e621c0a65ad9d931424bbec6672eda0019925cad5df34eae2877fe350b9
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://cctraff.ru/aws?keyword=navy+seals+in+vietnam+pics In PDF document text
    • https://kafasomawupi.weebly.com/uploads/1/3/0/7/130775431/cc94e2f936e8f2c.pdfIn PDF document text
    • https://manoxumumaxu.weebly.com/uploads/1/3/4/4/134472756/nizubisol-zotupeme-ruwejuzurar-netararojerimel.pdfIn PDF document text
    • https://xebikazogede.weebly.com/uploads/1/3/2/7/132740990/rijivigetes_dezegupoxope_soxetexitoja_dubigokowa.pdfIn PDF document text
    • https://paxesejok.weebly.com/uploads/1/3/4/3/134348383/cad669f5254f6f.pdfIn PDF document text
    • https://jikeberu.weebly.com/uploads/1/3/1/8/131857846/nixagikomuwul-jalaz-vivoneluvuni-zujun.pdfIn PDF document text
    • https://kubupukadumu.weebly.com/uploads/1/3/1/3/131382740/cd3f3c.pdfIn PDF document text
    • https://pudegubazamase.weebly.com/uploads/1/3/1/1/131163945/mewun.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off000062a0.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off000062a0.bin)
    • https://uploads.strikinglycdn.com/files/4e58bc26-9d59-4ad1-90a6-5656712d9893/distance_driver_disc_golf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/2263/4141/files/mapa_turistico_pontevedra.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0503/7077/3149/files/darinefezafevalijusogawok.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1868a0e5-df68-419b-899a-f21fbb1949eb/msbte_model_answer_paper_summer_2018.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c41b15ca-245d-44f0-ab45-f49a250858e1/didedugazez.pdfIn PDF document text
    • https://s3.amazonaws.com/xanebavifamopez/lulugidazoramak.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/307d6ae2-7ce4-48b8-8a82-f2c87f706f08/16964908405.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ff97e01e-bc8b-44ce-b172-0e4a77287879/xiponisegosaraxap.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_off000062a0.bin)

Related samples 7

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_off000062a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62A0 5116 bytes
SHA-256: c3a240a6c9e49835029e9959888a1aa90186e729beeb4757d0b4eddfef02ac10
font_01_sfnt_off0000740c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x740C 10936 bytes
SHA-256: c22422f801ee5aa2a3299c6f15acc9fde1bdb9e5c7420cf1d81aeae2c8ea10d9

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