Malicious PDF — malware analysis report

Static analysis result for SHA-256 66372ccb0cfff3bb…

MALICIOUS

PDF

46.7 KB Created: 2020-10-28 05:09:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-02
MD5: 66c788208057ce2cf859a4d205337618 SHA-1: 74246187378b63722f3d1ff152eeb101821cb5c4 SHA-256: 66372ccb0cfff3bb5fd05096dcff77e745aa1b3378209294709599e8a965eb94
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=pioneer+premier+car+radio+manual In PDF document text
    • https://sozivutapadonen.weebly.com/uploads/1/3/1/1/131164462/jusidekevugeru.pdfIn PDF document text
    • https://wifajeru.weebly.com/uploads/1/3/4/3/134342489/3240063.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413590/normal_5f950279ad677.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371265/normal_5f94d24473c44.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366317/normal_5f8c580a6173e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367302/normal_5f89c5acad459.pdfIn PDF document text
    • https://pavowojavujide.weebly.com/uploads/1/3/1/3/131398322/lakug.pdfIn PDF document text
    • https://zekasujiminog.weebly.com/uploads/1/3/4/3/134366003/5814850.pdfIn PDF document text
    • https://rijizego.weebly.com/uploads/1/3/0/7/130776487/8233311.pdfIn PDF document text
    • https://mupibidegupek.weebly.com/uploads/1/3/0/8/130874042/e1b9c.pdfIn PDF document text
    • https://jopomewimedadi.weebly.com/uploads/1/3/4/4/134465277/vopepog.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off000078d2.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off000078d2.bin)
    • https://uploads.strikinglycdn.com/files/3a57dc49-7347-4828-80c2-9acd15636710/vawiwedanaworovitevu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/361f136e-e03f-4443-8dfa-2be61b1bdd93/najovodofejefazanorow.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a409fddc-800a-4044-bd31-ee75ea888cf9/gesigug.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/783323b6-7e23-4c75-a3be-5932c295f842/9664102308.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/751aabac-0a6d-448c-9e37-7f181d090330/febulogarup.pdfIn PDF document text
    • https://s3.amazonaws.com/wogikokuzotaxa/alkaline_diet_recipe_book_download.pdfIn PDF document text
    • https://s3.amazonaws.com/wonoti/latex_beamer_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/jamokaroxoj/pexapijiwifapilo.pdfIn PDF document text
    • https://s3.amazonaws.com/jotizifime/jifawunobexepokulinow.pdfIn PDF document text
    • https://s3.amazonaws.com/xanebavifamopez/7557886378.pdfIn PDF document text
    • https://s3.amazonaws.com/dejolavubukugeb/oncology_clinical_trials.pdfIn PDF document text
    • https://s3.amazonaws.com/zufojadibi/80565959707.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_off000078d2.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000078d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78D2 5040 bytes
SHA-256: 632183992fcda2189357e2a1bfe3ebe8cd4a0235f93e09103284d704ddbf394d
font_01_sfnt_off000089d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89D1 10428 bytes
SHA-256: 5512231b655f0f446663d3bd1f320541f820887187eb294dcd88e593ff956236