Malicious PDF — malware analysis report

Static analysis result for SHA-256 2fc5024246a95579…

MALICIOUS

PDF

36.6 KB Created: 2020-10-27 00:52:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 45ba3b84181ed149ee8d8f855873590e SHA-1: 6013eaceb08936a457a6df419522dec867a65292 SHA-256: 2fc5024246a9557922fa0cdb77f5ada33e468172b65c46a1f59dfd4a2fcef498
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/123?keyword=guns+and+thighs+episode+1 In PDF document text
    • https://rejigebejone.weebly.com/uploads/1/3/4/4/134462336/94d6035cbf95168.pdfIn PDF document text
    • https://gixejeti.weebly.com/uploads/1/3/4/3/134326891/zosexotibogu.pdfIn PDF document text
    • https://bevokelas.weebly.com/uploads/1/3/4/3/134310014/623971.pdfIn PDF document text
    • https://jamafijuzu.weebly.com/uploads/1/3/1/4/131437216/67641c.pdfIn PDF document text
    • https://panirosarukiza.weebly.com/uploads/1/3/4/1/134132539/xoribaj-xeveguzujuzubeg-ropidikam-jiwigo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409395/normal_5f968f006225f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366350/normal_5f8b1989a53a6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415052/normal_5f9655741737b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381104/normal_5f93468e950e9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372073/normal_5f97475f935b5.pdfIn PDF document text
    • https://naxizugopigonav.weebly.com/uploads/1/3/1/4/131408516/c573d3.pdfIn PDF document text
    • https://puvavijage.weebly.com/uploads/1/3/4/4/134461845/dotupowapapesaxugili.pdfIn PDF document text
    • https://nukubutoti.weebly.com/uploads/1/3/2/3/132302768/1041295.pdfIn PDF document text
    • https://wosezobar.weebly.com/uploads/1/3/1/8/131856012/dalinepizukuketezoli.pdfIn PDF document text
    • https://tubenuluni.weebly.com/uploads/1/3/1/4/131437864/dowug.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00004f92.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00004f92.bin)
    • https://cdn.shopify.com/s/files/1/0483/5478/7477/files/44121507609.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/8937/2329/files/jazot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/7800/4135/files/danafitagamuj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/8707/1906/files/vuwoxenijofexikisonofol.pdfIn PDF document text
    • https://s3.amazonaws.com/metubevozisul/fumivol.pdfIn PDF document text
    • https://s3.amazonaws.com/bulolimepol/razetowosaxezibunuxibawa.pdfIn PDF document text
    • https://s3.amazonaws.com/bededuxotulapil/atrial_fibrillation_guidelines_2016.pdfIn PDF document text
    • https://s3.amazonaws.com/leguvefu/84431954415.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_off00004f92.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004f92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4F92 5176 bytes
SHA-256: 779411ee3e03b0f2b2bbb7f66a7f7cf0f05c873787c4bea384570e2a19666da2
font_01_sfnt_off00006130.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6130 10668 bytes
SHA-256: c05e6128ffd11e8fe866bffbf9c42de1f08f963c75878ea268d64b3b201c49c6