Malicious PDF — malware analysis report

Static analysis result for SHA-256 33908fc436dbc93a…

MALICIOUS

PDF

43.3 KB Created: 2020-10-07 19:09:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: aaf9692dc9b804666b47b96ed3ad91e4 SHA-1: 78bf7704a4adbc2f14d7ebf35431c8a6c77056bf SHA-256: 33908fc436dbc93a4f7ea9299f74c96ea6f5ce9c97e2da5c28fc067be7b39053
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://cctraff.ru/strik?keyword=nsc+defensive+driving+course+10th+edition+answers In PDF document text
    • http://files.toblergymnastics.com/uploads/1/3/2/7/132740423/dc714d45ce7.pdfIn PDF document text
    • http://files.newenglandelite.com/uploads/1/3/2/8/132814228/xadofunumagazegera.pdfIn PDF document text
    • http://files.methodistsontheyellowstone.org/uploads/1/3/1/6/131606260/merigem-xirunolipa-nopixe.pdfIn PDF document text
    • http://voxura.knoxpresbyterianwalkerton.com/uploads/1/3/1/0/131070357/99fd9ef5.pdfIn PDF document text
    • https://site-1036743.mozfiles.com/files/1036743/46691719435.pdfIn PDF document text
    • https://site-1037175.mozfiles.com/files/1037175/90223209981.pdfIn PDF document text
    • https://site-1036918.mozfiles.com/files/1036918/3942179830.pdfIn PDF document text
    • https://site-1039259.mozfiles.com/files/1039259/85639525692.pdfIn PDF document text
    • https://site-1037033.mozfiles.com/files/1037033/duwaxe.pdfIn PDF document text
    • https://site-1039846.mozfiles.com/files/1039846/nemakuxigutopetavogum.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3874/2440/files/49121091875.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/0978/8064/files/91900690018.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2414/6855/files/luwusilewikesumoxolidisag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/7967/3019/files/woxem.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

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_off0000695c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x695C 5568 bytes
SHA-256: fcd3756d75f0f412547f28090a2571ea6e2820d401c056d5442a440bcb1cb2a5
font_01_sfnt_off00007c6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C6C 10508 bytes
SHA-256: 026fd1e4f350f7994c34e5e85ae4a5a7d67607e5b9271caf6daae5da95dcd742

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