Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e6b6f5e76d4a5bc…

MALICIOUS

PDF

59.2 KB Created: 2020-10-09 18:57:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 0a008b34c2fc26900ed4196629bbeeda SHA-1: 799e06171e167ceeba0c7a72a07d1cfe926f0ca5 SHA-256: 3e6b6f5e76d4a5bc9d808647e771707c1f7f7a8a7902050a1e6ea9ea1892eb4c
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://ggtraff.ru/strik?keyword=angry+ip+scanner+mod+apk In PDF document text
    • http://baduvov.jacquelinecutler.com/uploads/1/3/0/8/130814229/76e426f43da.pdfIn PDF document text
    • http://kudizaxo.firstaidcomicstaylor.com/uploads/1/3/1/3/131398036/sevuvepikiro.pdfIn PDF document text
    • http://zekut.catalynics.com/uploads/1/3/1/4/131406665/sezuteda.pdfIn PDF document text
    • http://jodogerax.bethlehemctcommunitygarden.org/uploads/1/3/0/7/130740112/roliwiniwe.pdfIn PDF document text
    • http://files.lastwatchhorology.com/uploads/1/3/1/1/131164556/daxololo-dixavawagozu-povuwu.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/31a10a0d-e49f-47d2-b363-3a3467405d76/xidigepiromokupuxomikud.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/462602e9-cf2b-42a8-b612-6b0ff23380be/56496477696.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d45f5265-d2d9-4418-9986-8b49de2a168d/33248433333.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/31574553-3926-4dd5-a5d7-0a5c25e22257/gijorazede.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c3f582fc-5c45-481f-b95e-43daccf2ef75/44200211680.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/95ee8428-dfc8-4ddb-bd23-bef0a2a6c6c8/kavoroxexovofiwagonuju.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/141414b2-9152-426e-86be-24d1a76b312d/sovorifujudamewefubo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/54bc1752-44ff-4f8a-bb14-b1f7d1a2c7e6/volajidiri.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1bb7bd72-850f-45c5-90a0-a44c91f25187/sakelanazopebixifamosij.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/815a3054-59a1-48db-8046-dd3cf967fc69/mepikaz.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_off00009ee6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9EE6 5516 bytes
SHA-256: 9980099271f9d87c178cf5ba2a087bc32a403d0efc59b6d2cec0bf5595fef289
font_01_sfnt_off0000b1ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB1AC 15064 bytes
SHA-256: 5c5edf8fcb458dc8084a180f4a6006f443364c6984177803f68dfd2fed3d62c9

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