Malicious PDF — malware analysis report

Static analysis result for SHA-256 f37f11810ef68341…

MALICIOUS

PDF

46.0 KB Created: 2020-10-14 23:13:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 57f028ef1490fd27f10fe6d081135464 SHA-1: e4fe47790fb1c9216f263902ee8680e987597ec6 SHA-256: f37f11810ef68341d70259aa32cbb24e28243323db5961a22cedf1ad7c264305
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://ttraff.link/pify?keyword=chokher+bali+book+in+english+pdf In PDF document text
    • https://xumogimunosu.weebly.com/uploads/1/3/1/6/131607683/rezazem.pdfIn PDF document text
    • https://sibakixode.weebly.com/uploads/1/3/2/8/132814768/siduru-wojexej-filuko.pdfIn PDF document text
    • https://rakamukomegu.weebly.com/uploads/1/3/2/6/132681656/wajosemimanisonoliro.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/vigirupiruwovilav.pdfIn PDF document text
    • https://kabudededawizo.weebly.com/uploads/1/3/1/3/131383409/dc102ab0b703.pdfIn PDF document text
    • https://jiwepurojal.weebly.com/uploads/1/3/0/7/130775762/lusexaxapel.pdfIn PDF document text
    • https://jiwepurojal.weebly.com/uploads/1/3/0/7/130775762/2995731.pdfIn PDF document text
    • https://genigudepa.weebly.com/uploads/1/3/1/0/131070712/runemevurexuziwone.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/nipomomuka_gisotufeje.pdfIn PDF document text
    • https://gimejexoxixaza.weebly.com/uploads/1/3/1/8/131872185/kadupe_ripovu_jozovagazemewe.pdfIn PDF document text
    • https://site-1044498.mozfiles.com/files/1044498/40506138929.pdfIn PDF document text
    • https://site-1041503.mozfiles.com/files/1041503/24778051400.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366028/normal_5f8717f451d48.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366312/normal_5f87109de89d4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366993/normal_5f873d1135d16.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365639/normal_5f871bf4aae16.pdfIn PDF document text
    • https://site-1036791.mozfiles.com/files/1036791/najiragite.pdfIn PDF document text
    • https://site-1039350.mozfiles.com/files/1039350/28927277047.pdfIn PDF document text
    • https://wepugimi.weebly.com/uploads/1/3/1/0/131070973/xenojefomil.pdfIn PDF document text
    • https://vuxozajuje.weebly.com/uploads/1/3/1/3/131379873/debizikirapanas.pdfIn PDF document text
    • https://mogilifus.weebly.com/uploads/1/3/0/7/130739831/8347111.pdfIn PDF document text
    • https://gimejexoxixaza.weebly.com/uploads/1/3/1/8/131872185/d96ddb407408.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/f9007.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000073df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73DF 5412 bytes
SHA-256: 7ceba93feb2f746dbdd8f3a91ad9ada94dfed12d1e864ab61404801caf436d62
font_01_sfnt_off00008636.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8636 10580 bytes
SHA-256: d4066278e90bc715f90efcbb4e90ed6572a11424a5320ae4e67f93aff1bfb9df