Malicious PDF — malware analysis report

Static analysis result for SHA-256 dab7b87c9deca205…

MALICIOUS

PDF

42.3 KB Created: 2020-10-13 11:54:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 78e62cf9ea9e1ef7e3c4a9afa38eaef6 SHA-1: 567c5689e23fdeec24c2ef7cf6f631b68d761b65 SHA-256: dab7b87c9deca205fefc6e3ce968691e860e7488766757edaa76fe9035aa5e4d
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=amazon+app+for+android+box In PDF document text
    • https://genigudepa.weebly.com/uploads/1/3/1/0/131070712/3e75a4e696b2f2d.pdfIn PDF document text
    • https://jemiwuwavaza.weebly.com/uploads/1/3/0/8/130814288/bibesekukemugedovofa.pdfIn PDF document text
    • https://dimaxafazeza.weebly.com/uploads/1/3/1/4/131453031/nukexifepejisox.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/28d6ea68-b5d2-47f0-b48a-bcd5ee85fb74/77358420366.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/312c159f-199b-4c33-a593-3be079d97a1a/tutomevibivazisanazuk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/57465ae3-c422-4c23-aad5-41e1207a3b21/30882687151.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9f70e3e2-adf2-4deb-83ea-7bab0d6aa372/82187973516.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1e8cedb7-c732-48c9-a4f6-37591030d1b3/fenotewitumoludo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a06a3b4c-7def-4746-966d-d79a9559430e/dokegitukexisupiludobuxig.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fcd4b26c-d16a-48e9-9bf9-cb5f6bf0c7f2/35491513250.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dfec52d8-a17d-4c49-b7d0-00f612813f07/56174403877.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ca8a49ef-3fa5-4e37-a563-2093edcd74d3/rekoz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bf20ebb4-e03c-477d-afd1-46f866c21610/vuvibinibixumumexanotud.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2dff5bfb-8cf9-44a2-83ae-ae1727f0f950/basezene.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f66e7e88-ce52-4516-b8dc-0e0d1411fdb9/fefidosuwadijureratojuna.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_off0000685a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x685A 5224 bytes
SHA-256: 3161f37f16c25fb81c637ca3f2eb1620672e43975dc139106e188da447ddb5f2
font_01_sfnt_off00007a0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A0B 10092 bytes
SHA-256: ed1bb5073dfe3cd431880dcce7b8b7b604ece4de4d4ad5c02136a3daba99d56a

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