Malicious PDF — malware analysis report

Static analysis result for SHA-256 7986324eb9c23678…

MALICIOUS

PDF

48.0 KB Created: 2020-10-11 14:01:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 88a68559495822fd7009d305dfa95cbf SHA-1: 7ece94bdf55fc52b09299665e1b5112e09702c3c SHA-256: 7986324eb9c23678ed35203529e1274b9a64903341aff5d41a07d2acd4b98f50
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://ttraff.link/pify?keyword=computer+basics+scavenger+hunt+answer+key In PDF document text
    • https://site-1038790.mozfiles.com/files/1038790/zanivorisuzano.pdfIn PDF document text
    • https://site-1039674.mozfiles.com/files/1039674/23942410928.pdfIn PDF document text
    • https://site-1036796.mozfiles.com/files/1036796/tirubugitexibewoko.pdfIn PDF document text
    • http://files.proactivenasalinhalers.com/uploads/1/3/1/6/131636843/govetubo.pdfIn PDF document text
    • http://files.yvonnegordonmoserart.com/uploads/1/3/1/4/131406434/8038883.pdfIn PDF document text
    • http://rubifad.janitori.com/uploads/1/3/1/4/131405965/jadiwibijarulufigat.pdfIn PDF document text
    • http://files.cileiaslittlecloset.com/uploads/1/3/1/4/131438616/toxasida.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/1/0483/8716/2270/files/byronic_hero_definition_literature.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5042/5765/files/animals_in_louisiana_wetlands.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7650/9080/files/ridar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/3398/8767/files/77377175813.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5275/2283/files/sdsu_teaching_credential.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/270e5ef9-a1bd-48b5-b469-30a8cba891c6/24145370986.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5f07fe61-2158-4966-9506-c44cf279add1/sawuravusosivalajik.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2419fec8-31fa-48f6-a41b-75adf1f372ea/20119652466.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/68234d06-f8b4-469f-9f68-76e44f80b508/javovamome.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/698c06aa-d7e0-4a50-b224-aafaefb7fd9b/96239267908.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_off00007d67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D67 5680 bytes
SHA-256: e1381928d2cc6d3c817fc66d299dfaf44959d917126c53acb06ab8ebc58a2c9b
font_01_sfnt_off0000909b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x909B 10088 bytes
SHA-256: 9446a831aac52115b8216d8c984f603b8f469cf0dbc0a3c5c20da42b6402ad18

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