Malicious PDF — malware analysis report

Static analysis result for SHA-256 33e358b03fbd15f8…

MALICIOUS

PDF

67.2 KB Created: 2020-10-12 03:02:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 69257dd9f1b57889a9222aa26487be85 SHA-1: edef11e101ae5e4445c71e04218e87f1ef293929 SHA-256: 33e358b03fbd15f8d4bf3a0df1a5fc3852f93c21dd4b7c7c4f22117f72aec145
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=kabir+singh+mp3+songs+download In PDF document text
    • http://files.pureperspectives.com/uploads/1/3/1/3/131382808/5e61073c65db.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/7b2a6f06-6ba6-46a8-807a-eff0de1fc40c/68212250950.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8e1a3ab0-d5d1-4b73-ad32-b5cc4d9f8fc7/kidufarenatalizokerozubog.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/44ce314e-806f-4444-aa85-9ef962ef1e2b/sunejekimixodovopawadad.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4413fd5e-7b6b-4872-93c8-83d52b8f4417/zisugoderixor.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/24d2d76e-42af-4739-96d0-8bebacf1d3da/dexikapebebazamenit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/be7e479f-9ba4-433b-aa28-a8fc8c67eec7/vemokuwapupipiv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c76fd642-199e-4e12-9161-e369a084191a/25048465820.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1bea0ce0-6973-4638-b263-a780f8ef53ff/23122571468.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7136b6a2-1491-4d36-a0bb-c93b3ebd34ad/vezotareforebizadoworo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1d84e611-1068-4c26-a860-35ae266f6b0c/44357886517.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4dd6afae-1f7c-4166-b4e3-1fcee2bec0fa/41452153965.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9ca0f595-2985-40fb-8558-8bcf07dde23b/47257891706.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 3

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b052.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB052 5328 bytes
SHA-256: cd4e5c832b9727ccdaa78fda85e115db9c45ad1c323b7894d0e7b001f9eb1c0a
font_01_sfnt_off0000c236.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC236 15480 bytes
SHA-256: 73b051fa906c547d7ca98cc3b323fccd4f5052d1fe7be163126c6c96e53fe5c3
font_02_sfnt_off0000f216.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF216 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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