Malicious PDF — malware analysis report

Static analysis result for SHA-256 d069be96290d06a5…

MALICIOUS

PDF

45.0 KB Created: 2020-10-15 01:05:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 5561b7b336eae71a04a83b5c2cf72ee5 SHA-1: cce463f7e9845edf2504945c1e674cd99d070e28 SHA-256: d069be96290d06a5d917a1285df5b4d1248a2f3d0852b6803e9f519be997bce8
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://gettraff.ru/123?keyword=instagram+black+edition+apk In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366369/normal_5f876d8ba1d40.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366000/normal_5f876cf6e1ee4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367278/normal_5f8776134315c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366003/normal_5f87746240ade.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365662/normal_5f876a715dfe7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367952/normal_5f876d04029b8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366018/normal_5f876bfeef113.pdfIn PDF document text
    • https://nasinapalu.weebly.com/uploads/1/3/0/7/130739684/318493.pdfIn PDF document text
    • https://lagukekejase.weebly.com/uploads/1/3/0/8/130815031/demajawugijudo_narasobabuson.pdfIn PDF document text
    • https://jemiwuwavaza.weebly.com/uploads/1/3/0/8/130814288/tigosorivibisakoxu.pdfIn PDF document text
    • https://lagukekejase.weebly.com/uploads/1/3/0/8/130815031/zadan.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/likanutavorolebonat.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/2f54f13b-fe00-4364-8788-99ba34552c8c/tilatowi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3314b490-8566-461b-b36a-ec84100ed70c/39307199054.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/0124/9444/files/faxezafuxofetere.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/1219/3955/files/xuvizofe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/9300/9604/files/eddie_van_halen_frankenstrat_build.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/3798/6463/files/tapapo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/2239/2737/files/saint_joseph_craigslist_for_sale.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_off000063c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63C2 5320 bytes
SHA-256: 3e36e22555aeb94c0f3a4070c222ebfb4d57ad6d4a12720723f76e3e6f34cb38
font_01_sfnt_off000075ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75AD 10404 bytes
SHA-256: 51cc087326a7c756730faf0aa87cf414536d38ce40405ed698ac69f8d51558e3
font_02_sfnt_off000098e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x98E4 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333