Malicious PDF — malware analysis report

Static analysis result for SHA-256 67c4195131571ad7…

MALICIOUS

PDF

41.5 KB Created: 2020-10-10 09:41:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 8300027c0fc272cb94865420fb0333be SHA-1: e1b7ac8a822cc36fba0fbf01569bef5710f58e3d SHA-256: 67c4195131571ad79ab3e38976f14f63a2a9c9b7e37135f674a0a755ffaa0405
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=barony+class+guide In PDF document text
    • https://site-1036944.mozfiles.com/files/1036944/90570465298.pdfIn PDF document text
    • https://site-1037833.mozfiles.com/files/1037833/65510474156.pdfIn PDF document text
    • https://site-1048445.mozfiles.com/files/1048445/91331449433.pdfIn PDF document text
    • https://site-1038573.mozfiles.com/files/1038573/98612540752.pdfIn PDF document text
    • https://site-1036935.mozfiles.com/files/1036935/10470348221.pdfIn PDF document text
    • http://files.sassysewingandembroidery.com/uploads/1/3/1/4/131437061/tuvuzuj.pdfIn PDF document text
    • http://xovafuvi.stmichaelsworkington.org/uploads/1/3/2/8/132814343/vufaruni.pdfIn PDF document text
    • http://files.toastygoat.com/uploads/1/3/1/4/131452811/kumawiguzomojasow.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/1/0486/2201/0533/files/benotomenalatu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0477/5247/8876/files/62091754968.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0477/5700/0860/files/wobodegokebajazuxode.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1416/8487/files/types_of_asexual_reproduction_in_plants.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0477/4631/8492/files/pakijupibizaxi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/380f8a03-412e-47a4-b82c-8f6d4e266a4a/58352272468.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6807460d-d255-4c25-9e70-0fbbf29b6c1e/bogixoreviwavazuxojebusa.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_off000063f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63F0 5260 bytes
SHA-256: 69fd1ec246521c9c81b7c9665cdded3ff67f6508872818405ea80abf18b7dd59
font_01_sfnt_off000075e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75E6 10500 bytes
SHA-256: 0cbc64585c6f0d5b81bf391658a0f406c23c2302228fb74365f0b2eef3f1a6c6

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