Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3ea527f7f7fbe95…

MALICIOUS

PDF

36.5 KB Created: 2020-10-07 12:45:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: e30c4e0078686bff51d66ff77fa86568 SHA-1: 2956842501427621de2df3b3ea86dd02578f613a SHA-256: e3ea527f7f7fbe95889d1d64c08ffd685669347ee3807b23e1e7db15cdb1ca5a
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://gettraff.ru/strik?keyword=she%2527s+the+man+full+movie+123movies In PDF document text
    • http://durow.riveflowyoga.com/uploads/1/3/1/4/131454950/buzifusalatapos-zeliwirabejepe-fepemaletotedet-gupozitoxuwep.pdfIn PDF document text
    • http://files.magiciantomanderson.com/uploads/1/3/2/6/132681494/eda84e88.pdfIn PDF document text
    • http://jafaver.myrtleproductions.com/uploads/1/3/1/6/131607240/8517627.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/efa4f73d-bab6-4bde-a395-342f1de5aa87/53112868623.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0b83b0dd-7e8d-413a-8aab-8a4923784bf5/80645387634.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8ff3bf95-472e-45da-b331-1f3a8880be9c/43607661387.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e0176f1e-be16-4ee6-abd6-2c3554e39ad1/ziwirilisiro.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5dbdca83-64dc-405c-9601-9468074b6f85/lizajukowikipudajuv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6b486ce5-c942-428a-8cd1-5965a8427e9b/kepukobir.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4a7d7a76-79b2-4b31-a7f4-284ed20d10db/wusinefetipakem.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8df12fd4-dae8-48f3-b682-1a38d4753bf6/46737502418.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3d411739-2cbd-41ba-b2fb-71df9aa84d20/12814511065.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8122fa38-e3c3-4702-bd9e-0f689b950d2c/40257504439.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/14c8b68d-e4c8-4e19-b3c0-3fcf18fdd074/64238187587.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e370ae61-761b-4ccc-84c2-1cc00cae4a77/domuletalokulubujeba.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_off00005042.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5042 5456 bytes
SHA-256: 31d84cddabc180756a5903d503421b47c13f79d903d8f1b92d4a9010274616d1
font_01_sfnt_off000062c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62C2 10112 bytes
SHA-256: 53fd7ecd511ab024220a506475f030f6bfb42bc508ab587c9c7d9bf9852e67e1

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