Malicious PDF — malware analysis report

Static analysis result for SHA-256 8cd31188c9ec4ae1…

MALICIOUS

PDF

34.1 KB Created: 2020-11-02 01:32:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: c37b7c4bb0773cadbb242d0ccba8ed4c SHA-1: 0789b3054a054c1cbe9f6f463f53d62257bfc78d SHA-256: 8cd31188c9ec4ae129abb19da8954e669a0409c2519e879379a9d8f3f1a8dd09
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://cctraff.ru/wb?keyword=arcade%20basketball%20unblocked In PDF document text
    • https://ditiwudo.weebly.com/uploads/1/3/1/4/131452947/lazekazatulemofun.pdfIn PDF document text
    • https://xifobosakup.weebly.com/uploads/1/3/2/8/132815359/tunapesebi.pdfIn PDF document text
    • https://vilukenuxe.weebly.com/uploads/1/3/2/8/132814007/bovunolijerumupi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420449/normal_5f9a0df467d61.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412773/normal_5f9c01c72fb82.pdfIn PDF document text
    • https://xalipifizipig.weebly.com/uploads/1/3/1/3/131379045/totenowawuni.pdfIn PDF document text
    • https://wilunozuwi.weebly.com/uploads/1/3/4/4/134432110/lemerafil.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389107/normal_5f98a6071d4ea.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367925/normal_5f9e660ce82d5.pdfIn PDF document text
    • https://dawozonejuveru.weebly.com/uploads/1/3/4/4/134489779/diwavudu-rejar-rofadu.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off0000492b.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off0000492b.bin)
    • https://cdn.shopify.com/s/files/1/0496/2297/4627/files/descargar_angry_birds_epic_hack_apk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0495/9875/9078/files/vuzolojiwonowi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3393/5519/files/17066970055.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/faac562b-edc3-4e7b-92be-daa14f967362/turerudubug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/5657/6667/files/92559812048.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0268/7716/5741/files/davufivazov.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 extracted file (font_00_sfnt_off0000492b.bin)

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_off0000492b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x492B 5128 bytes
SHA-256: 08e5df601686e0158377ecf00588d6f889340f06b887ab6e372c99271d723ef0
font_01_sfnt_off00005aa7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5AA7 9648 bytes
SHA-256: dd825574481c66b73819e54f87a36644a4dbf62dc2af8bb030f2c64692d4355f

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