Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b66bebb037fd119…

MALICIOUS

PDF

51.3 KB Created: 2020-10-04 19:09:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: ffe8b149757a79a1083ee78df9703386 SHA-1: 592b109a81109acf5444abf38821dfd30c43791c SHA-256: 7b66bebb037fd119fa5aa39450e1f7bdc52ab217b16f6d19fa511c91dc56709f
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=gw2+scourge+build+pve In PDF document text
    • http://nikun.robertacervelli.com/uploads/1/3/1/6/131637257/7552573.pdfIn PDF document text
    • http://tusujiba.wolffphotography.net/uploads/1/3/2/6/132695569/dibopazememe.pdfIn PDF document text
    • http://xobeti.petergibsongrimes.com/uploads/1/3/1/4/131408832/vemasavewoj_mapekivipilito_kufikironitose.pdfIn PDF document text
    • http://files.wowfactorcards.com/uploads/1/3/0/7/130738559/lexidemigoferezi.pdfIn PDF document text
    • https://site-1039888.mozfiles.com/files/1039888/15417875401.pdfIn PDF document text
    • https://site-1037897.mozfiles.com/files/1037897/xozafifebo.pdfIn PDF document text
    • https://site-1036745.mozfiles.com/files/1036745/18971242223.pdfIn PDF document text
    • https://site-1037253.mozfiles.com/files/1037253/70553721591.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/1/0462/0019/3182/files/sofobuwilamujutot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1446/3394/files/coure_eladrin_3.5.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6736/5794/files/gafikebakelenupaxevor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0476/6924/8166/files/pajobe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5020/4327/files/force_couple_system_shoulder.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d14c777a-6d97-49c3-b6c4-d64c70ed7d53/dufej.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/601bab3e-5afc-4e6d-a87a-2b3a57c52987/77222240878.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_off0000881a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x881A 5484 bytes
SHA-256: c53a976a106658fa8e75302d1b7bfb0a744ba7801b7cc29c81c413befa564502
font_01_sfnt_off00009af9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9AF9 10900 bytes
SHA-256: b38d08e60f2065fe96c4002e80091792c9e002e95d4f9467662299642a8b0623

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