Malicious PDF — malware analysis report

Static analysis result for SHA-256 94a7701494c9ba62…

MALICIOUS

PDF

42.1 KB Created: 2020-10-05 03:03:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 32c575712caa03000ca02d3cf46d657d SHA-1: 7e7f60f5caa5a607ca82b2d5218e03600a3d124a SHA-256: 94a7701494c9ba62eb0d805226c3ea361f51987b4c4a67d920159b889c68edd8
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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/pify?keyword=tuan+cuu+nhat+kinh+duc+me+hon+xac+len+troi In PDF document text
    • http://files.whitneycromley.com/uploads/1/3/1/6/131637385/fumonim-rikevuligeja-bozifed-fitet.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://cdn.shopify.com/s/files/1/0486/2771/2165/files/batalla_de_puebla_date.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6936/5654/files/free_book_spot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0499/1400/files/492620943.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/2161/7317/files/57975035633.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2ba7c5f7-ee9b-405d-b73f-13264a4198dd/27669698382.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/460543d8-9a5b-460f-8637-960fdce17101/47768021388.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b062daac-cc24-4834-ad59-80737d099f61/73847951939.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5f626d59-4ea1-4edb-a963-78c76ec4db6e/duwedev.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/88b7e794-23fd-41fd-a17d-df665b73ff37/povulitepuparapumosedumar.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/684b2c66-96a7-442c-bffb-ac7197a31a1f/moborajawog.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bc3a62a8-3c87-474f-bd78-87e68da84c42/tavijurupu.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005a5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A5D 4964 bytes
SHA-256: 53b13c96f7aa56eeac4da4c98690c842bf24c5d3f5ef9b3c113cdb2b8b147c68
font_01_sfnt_off00006b01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B01 10084 bytes
SHA-256: dcb85f20bd5c5f6bff8886980d9ec999853c91b4ceb64666b2379915e605e58f
font_02_sfnt_off00008d96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D96 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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