Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f411e73150ea7d6…

MALICIOUS

PDF

37.7 KB Created: 2020-11-03 22:53:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2022-06-20
MD5: 5ca040064cf3137feaaf5baece2a6c5b SHA-1: 288c96e29c4438d2fbecaed9add0446f37bd674c SHA-256: 6f411e73150ea7d6e96dd6f2d699b1f66dbb65e4b3e1eda219c0846e9bf9549e
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://gettraff.ru/123?keyword=jayco+owners+manual+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4375207/normal_5f8a076beefb0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367635/normal_5f88bedd398b9.pdfIn PDF document text
    • https://kenumobubedu.weebly.com/uploads/1/3/4/3/134370592/6670189.pdfIn PDF document text
    • https://xupuxagezizese.weebly.com/uploads/1/3/4/6/134613092/1ef43bd.pdfIn PDF document text
    • https://tibiwurab.weebly.com/uploads/1/3/2/6/132695994/7553553.pdfIn PDF document text
    • https://zizuralozirufu.weebly.com/uploads/1/3/1/4/131483034/1426849.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380219/normal_5f92457c5b733.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417814/normal_5f9bb203abbb9.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/susopuzupure/xofuzuludafoxa.pdfIn PDF document text
    • https://s3.amazonaws.com/venunamazozuzo/steampunk_pocket_watch_for_men.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/68c9b7e8-b203-423f-9bc6-8f3fb87f2003/lewukuvagibunel.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_off00004f28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4F28 5484 bytes
SHA-256: 9097b42cd50eaa7bc948d262640d5724f9c9d00fd81aa785801efbdd737e6264
font_01_sfnt_off000061d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61D8 12048 bytes
SHA-256: 4318892ac443fa2bb09332e76ff7397a212691cc3080acbf4d67281178c5db21