Malicious PDF — malware analysis report

Static analysis result for SHA-256 1322af36d3ed3b96…

MALICIOUS

PDF

40.4 KB Created: 2020-11-02 05:55:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-15
MD5: 7ec307d103fb5f8c00c96c3f674b320b SHA-1: 277f58e4916283cdfb15fd3258733805f3f95446 SHA-256: 1322af36d3ed3b96232e6073162e7ff855722fab73ab078c879d878412b428bf
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://cctraff.ru/aws?keyword=create+website+using+google In PDF document text
    • https://cdn-cms.f-static.net/uploads/4388276/normal_5f8f075f87832.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377935/normal_5f9158308b09b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365653/normal_5f88a64686a5c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410722/normal_5f978c116903e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421461/normal_5f9726751f6a3.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/91faf154-3340-40ab-ad43-7afeaf6db91d/narutunanat.pdfIn PDF document text
    • https://s3.amazonaws.com/vonusirukete/lelanumunasorasadokapejeb.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/18f85b5d-46db-41a4-9a34-74b0aec9b6b6/5452058758.pdfIn PDF document text
    • https://s3.amazonaws.com/povodijirig/ruwunojumizem.pdfIn PDF document text
    • https://s3.amazonaws.com/padadutiseni/jirijibugikubi.pdfIn PDF document text
    • https://s3.amazonaws.com/xarojapi/attacco_dei_giganti_manga.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7bded73b-dfc1-49c0-8221-3b91a1f1c5a6/62130962998.pdfIn PDF document text
    • https://s3.amazonaws.com/vavebufevodutob/vanulefipudupu.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_off00005fb2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FB2 4992 bytes
SHA-256: fcceb8d3891a8e5c1b3dbab69b958d2ef4dbc4be35bf7090319e235b540ea40c
font_01_sfnt_off000070c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70C9 10588 bytes
SHA-256: d4088cd4e8dde700414d2aded01295511bff78a3e462296869a9fca7d6df8f38