Malicious PDF — malware analysis report

Static analysis result for SHA-256 b7b6c7cb31063d93…

MALICIOUS

PDF

51.7 KB Created: 2020-11-05 20:55:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: 8be571291f0a2909a0937b31aed39d14 SHA-1: c7b3394df75019027757c91e3fca450dc4dac94f SHA-256: b7b6c7cb31063d933528133c5bb99d2e4911d1ffe2d2c017811099b906aa15b1
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://traffking.ru/aws?keyword=spanish+1+syllabus+college In PDF document text
    • https://xudibonazo.weebly.com/uploads/1/3/4/3/134353284/9949449.pdfIn PDF document text
    • https://bilimetib.weebly.com/uploads/1/3/4/4/134435282/3e8a69.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406454/normal_5f9b1da15653b.pdfIn PDF document text
    • https://gasodugolulo.weebly.com/uploads/1/3/4/3/134375537/cce30c3dbe1d20.pdfIn PDF document text
    • https://rolosakuzorega.weebly.com/uploads/1/3/1/3/131379035/a5e0338.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370088/normal_5f94eb1a75133.pdfIn PDF document text
    • https://dinoromakutaxe.weebly.com/uploads/1/3/4/4/134479472/3473357.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/1/0503/8214/3686/files/gosomalafubesa.pdfIn PDF document text
    • https://s3.amazonaws.com/zetare/gamosemukulo.pdfIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/literary_devices_and_their_meanings.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0c3a61b1-1f9e-4f51-956a-9c699a702faf/high_school_ceramics.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3b00993a-bf72-479e-a51f-e8e71c124084/xupebozirokenajugovofiwi.pdfIn PDF document text
    • https://s3.amazonaws.com/jebokizez/78041121203.pdfIn PDF document text
    • https://s3.amazonaws.com/dixaleko/90645149629.pdfIn PDF document text
    • https://s3.amazonaws.com/wibedubosateg/virtual_reality_vs_augmented_reality.pdfIn PDF document text
    • https://s3.amazonaws.com/lanubili/plazma_burst_hacked_omega_dust.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007ccf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CCF 5496 bytes
SHA-256: b0f5b86cd7f8dc056aa12f4bfe437aa142b5150ff83f65887b4036e8aae8c678
font_01_sfnt_off00008f8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F8B 16312 bytes
SHA-256: 2b03ba473dc6355e197ba5f78bd0b36c1cee27655b3e9808e266eb6f44e10c60

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