Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c7a9e5adf9f3587…

MALICIOUS

PDF

40.9 KB Created: 2020-11-09 13:36:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-15
MD5: 180e14c76d284f1705caa41c8cf21548 SHA-1: c3190493c880e12088082b7546ae4d277a3e3819 SHA-256: 4c7a9e5adf9f3587171db190b0fb521c2bd6312b81da8c10281515db291e1ba7
174 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.
  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://traffine.ru/aws?keyword=metal+gear+rising+revengeance+apk In PDF document text
    • https://cdn-cms.f-static.net/uploads/4410204/normal_5f9d1a5c2505c.pdfIn PDF document text
    • https://raxiruzaxulam.weebly.com/uploads/1/3/0/7/130738564/lenurexanugelex.pdfIn PDF document text
    • https://livabawixegi.weebly.com/uploads/1/3/4/3/134320323/zorofidi_libuxufixo.pdfIn PDF document text
    • https://vilukenuxe.weebly.com/uploads/1/3/2/8/132814007/tasawapadupaxasixep.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/443d3e15-a911-49d1-a923-42b9ce359b80/fuvusifaranudusuwudori.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2081fb87-707e-4918-b971-cebc6ab46460/liduberunu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8cff36bf-a61a-4fc0-bcf3-a60199d742d1/jutikexisoxiderezagusuv.pdfIn PDF document text
    • https://s3.amazonaws.com/pujirageg/wajademuf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/88efc45b-43db-40f8-a684-e1b56f755476/mezuje.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e86bc687-b9f4-4b0a-b5e0-bb840064599b/85800052958.pdfIn PDF document text
    • https://s3.amazonaws.com/gawabog/38626586193.pdfIn PDF document text
    • https://s3.amazonaws.com/wonoti/flag_banner_template.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_off00005f31.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F31 5228 bytes
SHA-256: 503b1dbb10bc596c7d89a0920746e8c39e89e630f3fce1356e18be94cfcadd83
font_01_sfnt_off00007128.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7128 11204 bytes
SHA-256: d90920aab1379f0b871d51c6057d8ce01f92595acfa3334d52471da6bd7bfe36