Malicious PDF — malware analysis report

Static analysis result for SHA-256 d168f8e990264f6b…

MALICIOUS

PDF

37.8 KB Created: 2020-10-15 02:03:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 2d386b2f9c89532e10d40a3299dc33f3 SHA-1: e85e8d73dc8457af100ead58f10d77348831c2c5 SHA-256: d168f8e990264f6b3ea1d10256b4fd08889459f2a5e45f5076e7f1d6890a5c81
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://ggtraff.ru/pify?keyword=oreck+xl+xtended+life+vacuum+manual In PDF document text
    • https://cdn-cms.f-static.net/uploads/4365638/normal_5f874d4b8ea8f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365545/normal_5f87053e0287f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366659/normal_5f875bc2b0933.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366360/normal_5f8754485e242.pdfIn PDF document text
    • https://bibeliki.weebly.com/uploads/1/3/0/7/130738572/8414347.pdfIn PDF document text
    • https://mijisurux.weebly.com/uploads/1/3/1/0/131070147/fakavugufoner_wezod_mudegujidefub_rewekup.pdfIn PDF document text
    • https://punadojum.weebly.com/uploads/1/3/2/6/132680976/4666761.pdfIn PDF document text
    • https://vuzevarezevarot.weebly.com/uploads/1/3/0/7/130740461/2736734.pdfIn PDF document text
    • https://site-1043763.mozfiles.com/files/1043763/xofeposotoxelamibukofurub.pdfIn PDF document text
    • https://site-1042889.mozfiles.com/files/1042889/tamarine_capsula_bula.pdfIn PDF document text
    • https://site-1042593.mozfiles.com/files/1042593/lubalizamepelekaxezitala.pdfIn PDF document text
    • https://site-1044163.mozfiles.com/files/1044163/25047800547.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/9173/1649/files/dark_phoenix_123movies.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8047/2984/files/ziketukinuzizagoga.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7a2c64c3-90a0-427f-882a-8aecf39afb5c/dumufurazewigasorogek.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/77b5dd4a-d27d-4051-b335-45d87c940239/gagodenegaganamupor.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fa8070bc-cbb8-4ece-a124-ba7ec1bb6e49/kunosibevaxodagij.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9f9ef7a9-c50a-44dc-b2f8-b6c3887e7558/4210792157.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7165b75b-c04f-4b9a-a720-f8f3af7e1e6b/zuxizamowumakanujeta.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1825/5516/files/turufejoxajibazijamepuza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/0341/5197/files/comic_strip_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0493/8842/1282/files/zavokabi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8762/5369/files/jijilofomila.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/7613/4082/files/69764503940.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_off00004d5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4D5D 5208 bytes
SHA-256: 665c8dad8d25f09ae2e5b5f87e979dd6a0a0c730a9c30b90ce8fafb56130f3a8
font_01_sfnt_off00005f06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F06 13484 bytes
SHA-256: e79567aaace7cbfabb4ab85b72ef4a675e8614d52af3f63df7cf020c01f8bcd5