Malicious PDF — malware analysis report

Static analysis result for SHA-256 bcaafeaf236d9a33…

MALICIOUS

PDF

42.8 KB Created: 2020-10-15 09:21:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: cddd56774fbe6a63e886af240d03ee7a SHA-1: f955a14923856393ed138465c51bd4ed459d5dfc SHA-256: bcaafeaf236d9a334607898fe08dd2d2104025fa32a5e0ae49c3cea3c4a79ae3
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=arc+length+of+circle+worksheet In PDF document text
    • https://batagokefo.weebly.com/uploads/1/3/1/0/131070859/kodazozikibizaz-mexamuzuxewo-luverowopo.pdfIn PDF document text
    • https://zoxuzuxebexot.weebly.com/uploads/1/3/0/9/130969059/jogowezokuvaxu.pdfIn PDF document text
    • https://dimaxafazeza.weebly.com/uploads/1/3/1/4/131453031/porukofosu.pdfIn PDF document text
    • https://jatorogerujew.weebly.com/uploads/1/3/2/7/132710569/5650151.pdfIn PDF document text
    • https://dirigesibujov.weebly.com/uploads/1/3/0/9/130969991/4637410.pdfIn PDF document text
    • https://zoxuzuxebexot.weebly.com/uploads/1/3/0/9/130969059/4d5351fbb209c0.pdfIn PDF document text
    • https://rabexowubomisuw.weebly.com/uploads/1/3/1/4/131407155/neserisibudopazas.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368989/normal_5f87b1f71ce93.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365607/normal_5f87372d91dbb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366050/normal_5f86f5eb69511.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366397/normal_5f872873d63cd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368487/normal_5f87c91a99f62.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369783/normal_5f87e1035361f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366017/normal_5f873d32349cd.pdfIn PDF document text
    • https://site-1043080.mozfiles.com/files/1043080/sowafujepelute.pdfIn PDF document text
    • https://site-1039768.mozfiles.com/files/1039768/naxopavifebusiroler.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_off00006a03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A03 5076 bytes
SHA-256: 6addd0c974802b6efc6e042e4f123b4dcf5b00c140c092c79796407682fb09b4
font_01_sfnt_off00007b5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B5A 10252 bytes
SHA-256: dd251d0c2a14ea701bb7892395eb24eef1dc22b10c42986bc250e7790d6086f8

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