Malicious PDF — malware analysis report

Static analysis result for SHA-256 5afbee79f90a2be9…

MALICIOUS

PDF

46.0 KB Created: 2020-10-16 01:23:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: c440a6c8cbe63fc85b3007a5df9ad0c6 SHA-1: 674ba16f8a3a50d18fc47b5c0418bf8dcdbe6ba4 SHA-256: 5afbee79f90a2be932059dd4c872c883669f9dcb145df03032cab99f143f2981
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://ggtraff.ru/123?keyword=types+of+chemical+bonds+worksheet+answers In PDF document text
    • https://cdn-cms.f-static.net/uploads/4365638/normal_5f87ece346e69.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369179/normal_5f87c29558732.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366000/normal_5f8705c8cd05a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367633/normal_5f87632c10bce.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367914/normal_5f889b9371068.pdfIn PDF document text
    • https://jimigafekalese.weebly.com/uploads/1/3/1/4/131407537/tunovut.pdfIn PDF document text
    • https://jezaxegare.weebly.com/uploads/1/3/1/3/131380636/xesaz.pdfIn PDF document text
    • https://xojisige.weebly.com/uploads/1/3/1/6/131637148/zemokivajuf.pdfIn PDF document text
    • https://redunexodozik.weebly.com/uploads/1/3/0/8/130814050/7905752.pdfIn PDF document text
    • https://keniwuki.weebly.com/uploads/1/3/1/4/131483234/32e063a95e.pdfIn PDF document text
    • https://zafozudakajadev.weebly.com/uploads/1/3/0/8/130814863/kuwekewugi.pdfIn PDF document text
    • https://kizekusoviwo.weebly.com/uploads/1/3/1/4/131453028/finowo-pojanuzupas.pdfIn PDF document text
    • https://pumowurunumig.weebly.com/uploads/1/3/2/7/132740285/ad9d4.pdfIn PDF document text
    • https://zoxuzuxebexot.weebly.com/uploads/1/3/0/9/130969059/jogowezokuvaxu.pdfIn PDF document text
    • https://site-1038442.mozfiles.com/files/1038442/wivulakitifobupime.pdfIn PDF document text
    • https://site-1036753.mozfiles.com/files/1036753/41152772069.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/5cb9c4c1-75fb-4e81-8cf0-ec0a6a68ff3f/32576415001.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bf239c9a-e0fa-4432-9d7a-dff1107609f7/73895584117.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/083ca518-e753-4291-9605-5f44157f6974/82356756985.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/65d67756-152a-46e0-ac3d-6cb3f438cf98/ditaserapatipatojeka.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/54df282f-e4b7-4bda-b717-59758f4830fb/xapepivogaribef.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f42f11b2-99e8-4aaf-b9e1-265c83822f45/nekegukele.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/99278a8e-13b2-4d10-9600-d09996196b48/11901389323.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eff22112-f370-4857-860f-a7488f0436f5/56309816886.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007318.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7318 5744 bytes
SHA-256: 12af58b474de778d7faee213b4b2c976b30c61a2c81deb89e242152cfa1c05d0
font_01_sfnt_off00008693.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8693 10432 bytes
SHA-256: c835cb945121c2e920c0e4c0c374f99264324324fe7df0bd80f3573ca1847638

Open this report in the interactive analyzer, or submit your own file for analysis.