Malicious PDF — malware analysis report

Static analysis result for SHA-256 00bf2b38e695610a…

MALICIOUS

PDF

36.8 KB Created: 2020-10-01 06:59:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 2a39309c9abe450eeac2b100fd98e9ed SHA-1: 348503d80466e7ded836d8372227eead70cacff8 SHA-256: 00bf2b38e695610acd53c789ff541621d4161efd38494e19acb27e097594d77a
194 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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=jesus+bleibet+meine+freude+chor+noten+pdf In PDF document text
    • https://site-1036820.mozfiles.com/files/1036820/xizitovikuni.pdfIn PDF document text
    • https://site-1037082.mozfiles.com/files/1037082/kepafuzamijep.pdfIn PDF document text
    • http://zonovas.graylineconvention.com/uploads/1/3/2/3/132303064/689205.pdfIn PDF document text
    • http://zinifaru.omalleyfoundation.com/uploads/1/3/2/8/132814343/pekiza.pdfIn PDF document text
    • http://tadewi.benefit.live/uploads/1/3/0/9/130969744/xedageju.pdfIn PDF document text
    • http://files.themooovers.com/uploads/1/3/0/8/130874067/sikiwivo.pdfIn PDF document text
    • http://files.joannesscott.com/uploads/1/3/0/9/130969591/loxexakuvarodan.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0487/9797/4693/files/93050269980.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9948/8423/files/99456472984.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/6082/6007/files/sedimentary_basins_and_petroleum_geology_of_the_middle_east.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/3105/7816/files/99577045527.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0443/2376/6428/files/wefifedikulekajadugod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9745/6789/files/6514889436.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000040fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x40FE 5196 bytes
SHA-256: 32f233581b54773f2d5d08adc3454a4750d9b9aa8f6c8cd9c2581d397e34dde5
font_01_sfnt_off0000526c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x526C 10980 bytes
SHA-256: b526180716473ed1e6163b86a510357f9b25ec7ece25db23affecf62ca7dacb5
font_02_sfnt_off00007699.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7699 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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