Malicious PDF — malware analysis report

Static analysis result for SHA-256 e82f7743a501af6b…

MALICIOUS

PDF

36.9 KB Created: 2020-11-05 12:14:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 3601075c648bf52f6227216affe888aa SHA-1: 3749352d6676ad2a85fbf21b7ccf8281f9ff70d0 SHA-256: e82f7743a501af6b93dfb87ef927dc11689389b91e5659f245aaf6c7b28ff9dc
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://gettraff.ru/strik?keyword=list+of+transparent+materials In PDF document text
    • https://nakumupapetiz.weebly.com/uploads/1/3/2/7/132741615/sezixifibid-modiwelazupab-favifab.pdfIn PDF document text
    • https://nipufijupetobug.weebly.com/uploads/1/3/1/4/131482996/2778091.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365646/normal_5f88ef087943f.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/divili_dapixi.pdfIn PDF document text
    • https://xojerajap.weebly.com/uploads/1/3/1/3/131384359/safunezijowefup-wuluvifolat.pdfIn PDF document text
    • https://sobegivi.weebly.com/uploads/1/3/4/3/134311910/fodukuxilakefu.pdfIn PDF document text
    • https://dejolezeg.weebly.com/uploads/1/3/2/8/132815968/vutananewe.pdfIn PDF document text
    • https://zusaneji.weebly.com/uploads/1/3/0/8/130813769/dijuj-jowapudusi-boxuvobu.pdfIn PDF document text
    • https://kelutatu.weebly.com/uploads/1/3/4/5/134521402/5920b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/sugaguxagu/meaning_of_dreams_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/2239/1712/files/juxusufatoxaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/7781/1358/files/sig_sauer_p232_holster.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_off000052a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x52A9 4988 bytes
SHA-256: e98a6b41db1fa7195f80ae7fdfd05f75f4a98daba1ab04c7024d050672f349cf
font_01_sfnt_off0000638f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x638F 10556 bytes
SHA-256: e7ce12aaa10f7ae34e6e6880e963bdcb00fb15c5d6734abf6372204a04a5867d