Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e26cf050d7098ff…

MALICIOUS

PDF

61.8 KB Created: 2020-10-17 23:41:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 55600543e5d04c616fc7a954ac8f21f2 SHA-1: 2afc1e90a53bcd9eee72c96a54b60ec9c5b099e6 SHA-256: 1e26cf050d7098ff9ea9c3f1929a5f60673b72aa3a86418403daa54f2a5cfd19
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://ttraff.cc/123?keyword=talktalk+tv+plus+box+manual In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366045/normal_5f86fe924bd61.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368486/normal_5f8a49c45ee47.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/ratefunerod.pdfIn PDF document text
    • https://wozuwonasanava.weebly.com/uploads/1/3/1/4/131483955/rarek-muganize.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://uploads.strikinglycdn.com/files/e0da075e-b34e-43b5-8261-4aefc46da923/80185405682.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cf87fff6-ccdf-4326-81c0-1c0a0a2afb6a/tetejesoxabofusafuwe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4bc22bf3-00fc-4d32-ad6a-6d01677b604c/67592384399.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6b72ac59-fa31-4624-96bd-8315a0c84d98/xanadu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0e438e6c-d936-4d5a-a9b9-689bde107518/30877497743.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4432/1945/files/datagupuzopoputusutotumu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/8789/7787/files/15390569831.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/3208/0295/files/15864939951.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0268/8113/0691/files/22441446996.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1911/6449/files/lotomoxotuweli.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1a04deb1-270d-4e73-9163-8474f53493e0/lulamebamunavo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/86a43928-54c2-426f-a92f-e3c61c2b1908/88985405215.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bcb69700-b856-43f1-bbd1-d3520194f7bf/junoximolinogefep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/7348/5982/files/merovingian_looped_fibulae_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3937/2965/files/area_code_606.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_off00009a3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A3A 4868 bytes
SHA-256: aecb0a4ae1c81b22246b75d3af3b8a9d24ae3d82e00440ed83531e0b27711e36
font_01_sfnt_off0000aaac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAAAC 15920 bytes
SHA-256: affc58c449a27430e1b3386e2d43d0c6f2b259106ecd01d4aff2040be4859907
font_02_sfnt_off0000dba0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBA0 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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