Malicious PDF — malware analysis report

Static analysis result for SHA-256 92bf255db1bbcfd3…

MALICIOUS

PDF

45.0 KB Created: 2020-10-17 00:00:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 678ed52e950730bb5b16aaf253abec81 SHA-1: 778b411beec592a03b87af4cc02abc49006058fe SHA-256: 92bf255db1bbcfd3fcd0edd55650def852d62d3be1eb545396ae64141da50745
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=smart+switch+mobile+for+android+free+download In PDF document text
    • https://sepikupi.weebly.com/uploads/1/3/0/7/130738949/jelefe.pdfIn PDF document text
    • https://jatorogerujew.weebly.com/uploads/1/3/2/7/132710569/ruxozukozuvazu.pdfIn PDF document text
    • https://viweposedijul.weebly.com/uploads/1/3/1/0/131070314/gegibonupava.pdfIn PDF document text
    • https://jufaxexave.weebly.com/uploads/1/3/0/7/130775513/4008585.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367004/normal_5f8a09d1baf19.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366947/normal_5f8886796b1e4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365586/normal_5f86f61b935ce.pdfIn PDF document text
    • https://kutenamig.weebly.com/uploads/1/3/0/7/130740069/966a9b.pdfIn PDF document text
    • https://sadutixonigonu.weebly.com/uploads/1/3/1/4/131412491/457a29a.pdfIn PDF document text
    • https://dimaxafazeza.weebly.com/uploads/1/3/1/4/131453031/porukofosu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376857/normal_5f89ccfca7c58.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374198/normal_5f8a09d4f1a7a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375207/normal_5f89dfc928109.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/govorikepudago-gixidawele-wawep-xoxebilepadevu.pdfIn PDF document text
    • https://gevafitasib.weebly.com/uploads/1/3/1/3/131380901/e27909d0be.pdfIn PDF document text
    • https://zekuwatifakaxi.weebly.com/uploads/1/3/2/8/132815855/goboxif_wimulejolivo.pdfIn PDF document text
    • https://mupibidegupek.weebly.com/uploads/1/3/0/8/130874042/foxisewowixubetaja.pdfIn PDF document text
    • https://nudojafobedem.weebly.com/uploads/1/3/1/3/131379550/5cd54cf48e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365591/normal_5f872df9a1502.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369771/normal_5f89dfd424d98.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off00006dff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DFF 5596 bytes
SHA-256: b570dcd72ba25ebf557be8e0962aa13fb07746dd75d3ae10451d93be387d089c
font_01_sfnt_off000080e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80E4 10948 bytes
SHA-256: 9f7bc5823be8f824fae03a5c527121ac2a0475744fd481d7bb34643d049d8aa1

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