Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ab0e14ec24f0b8b…

MALICIOUS

PDF

53.7 KB Created: 2020-10-27 04:22:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 00437bd08d87c98cfdbfb79a8a1d42da SHA-1: 9607a95fb94691bad020d777ccc2228bb1b2db62 SHA-256: 9ab0e14ec24f0b8b3ef39777e03f017c810d9aee591319b8eee190c69fdbed6e
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/pify?keyword=honda+hrv+accessories In PDF document text
    • https://firedisivimi.weebly.com/uploads/1/3/0/9/130969818/zalawumavujiv.pdfIn PDF document text
    • https://firedisivimi.weebly.com/uploads/1/3/0/9/130969818/be5e9cf252db664.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off0000928a.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off0000928a.bin)
    • https://uploads.strikinglycdn.com/files/bf162227-32c3-4999-93a6-320cc01c93e4/99532623744.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0a3fc369-7ab2-4ce0-99c5-1100ec2f5468/vanujal.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6b447de4-5f2f-455b-8aef-947ccc60967c/42242561311.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/710aa172-6aff-4c48-ad04-c7c2024ef21e/18795037480.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7ff04ded-8b9d-4ed4-80cb-a0fb3aa3dbcc/ginefewafobev.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1766b7b7-2880-4443-978f-4a252a2755f8/pimatojesawoferijufumum.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/21229ece-d384-4543-b9c0-5ddd06f0672b/kediwesisowigiju.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/be7f9c94-9f87-4bc1-a86c-184c67e23d71/6297218020.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4f534e86-3ee1-41a6-a045-e34236887445/15423941220.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5448/8990/files/infant_pain_assessment_scale.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/9390/0455/files/assos_kefalonia_resort_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/7888/4759/files/fatigue_risk_management_system.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/935d1925-2151-4ef1-aa9c-852a878ee81c/95038757748.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/05b9fb19-4c01-4c9c-a28d-b2945f4e300f/50648668941.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7b828af7-7a35-4e78-a211-7b61f0c45a60/rorodexojoporawabif.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1d671c06-e4b0-4450-a002-24c771266a30/xozolododetut.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/93e38fe4-7c8e-44cf-95b3-7525cb90b976/pojejilo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/301eea14-b40b-47b3-b279-f86e107e9cc2/sennheiser_over_ear_headphones_review.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d97bc65b-4320-4eb1-874b-edfeccae1aaf/wunudabezogubixefazuwo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/187c9dee-d461-41c3-a8f2-ef52a4f168a6/julezuviwaru.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3a473b49-f9d3-44fb-9611-9da018b4d19c/31988721069.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 extracted file (font_00_sfnt_off0000928a.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000928a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x928A 5016 bytes
SHA-256: 30a54f87c42c51f2592ee7eb7924370959bdc74bf1b828b53eec08d17cdd95e8
font_01_sfnt_off0000a38f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA38F 11424 bytes
SHA-256: 62c55e9c06a69842d0c8b1a9464265d7bfd7a16d88c87e044c9d105cbdf8e671