Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e53bee08828e222…

MALICIOUS

PDF

45.8 KB Created: 2020-10-15 04:53:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 59fe0e2fa786767c4df7b406760a54a8 SHA-1: e09d5979e81b5e095e6efc7565efe3b2316676a7 SHA-256: 4e53bee08828e2224934efdb5c462f407df1cacce76d291c7ce79015c97f1b1b
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=download+game+coc+offline+apkpure In PDF document text
    • https://gidixelasulam.weebly.com/uploads/1/3/0/7/130739099/vatekejawejaw.pdfIn PDF document text
    • https://paguzijap.weebly.com/uploads/1/3/1/4/131453408/kulajovudazama_nobagikogisub.pdfIn PDF document text
    • https://zoxuzuxebexot.weebly.com/uploads/1/3/0/9/130969059/4d5351fbb209c0.pdfIn PDF document text
    • https://xisubuto.weebly.com/uploads/1/3/1/3/131380177/dawasexurijoxe.pdfIn PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/wowabaxisefidet-nikuvajekibesim-napoxalapa.pdfIn PDF document text
    • https://zoveponezewuda.weebly.com/uploads/1/3/0/7/130738822/9fd55072845169.pdfIn PDF document text
    • https://gimejexoxixaza.weebly.com/uploads/1/3/1/8/131872185/b4b3eb38b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368971/normal_5f87a3a1cbe28.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368741/normal_5f878d30e3af3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366965/normal_5f878787d4279.pdfIn PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/kezupukono.pdfIn PDF document text
    • https://fijojonibiw.weebly.com/uploads/1/3/2/6/132681787/vifotatilaw.pdfIn PDF document text
    • https://vewutaniwem.weebly.com/uploads/1/3/0/8/130873717/fivoz.pdfIn PDF document text
    • https://zulatikuwa.weebly.com/uploads/1/3/0/7/130776211/2745832.pdfIn PDF document text
    • https://xisubuto.weebly.com/uploads/1/3/1/3/131380177/d9a41.pdfIn PDF document text
    • https://kasukironumasex.weebly.com/uploads/1/3/1/4/131454791/bc36b.pdfIn PDF document text
    • https://zoxuzuxebexot.weebly.com/uploads/1/3/0/9/130969059/tidivobinimigip-banez-batipafon.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366347/normal_5f87753c1d754.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367631/normal_5f87a0a35abe9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366029/normal_5f87796d011c5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368971/normal_5f87a3471031d.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000647b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x647B 5452 bytes
SHA-256: d0a9fe32b32709076030eb51c8f39b7b8ed46df8a1a006782ce59fc26e989673
font_01_sfnt_off00007700.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7700 2264 bytes
SHA-256: cb6028086e6ec0c1691d6badcac641a545659820b1fd7736427ba9e0a00a9ce1
font_02_sfnt_off0000814c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x814C 12620 bytes
SHA-256: 7fc4d76bd7af3e9d3a92e04683f3a999a4fe81c908fb3821c95f45e3194bdb73

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