Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2695bd5b457c9fd…

MALICIOUS

PDF

38.5 KB Created: 2020-11-04 09:53:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 57ed733229786bc9d46f08c98822bc2a SHA-1: ee9c25fd294d627086c11dc4201b2fce27805881 SHA-256: d2695bd5b457c9fdc9eaa22ef23b71d25a25fbc3fa7dbb09fc534c4470df4bd1
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://ttraff.me/123?keyword=creating+characters+with+personality In PDF document text
    • https://sopopubepomexak.weebly.com/uploads/1/3/4/2/134265445/2cfbb522.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407070/normal_5f9f682da31da.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387718/normal_5f91dfec64c63.pdfIn PDF document text
    • https://tivakoxidedopa.weebly.com/uploads/1/3/0/7/130776298/vinaduxujamovinefe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369163/normal_5f87fca8f318e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381539/normal_5f92337b74717.pdfIn PDF document text
    • https://tidemipevu.weebly.com/uploads/1/3/0/7/130740592/guzedewadarilez.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/sitok/gypsy_goddess.pdfIn PDF document text
    • https://s3.amazonaws.com/fasanag/retinopatia_diabetica.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/48fbc9ca-1d9f-4029-a293-2e6d82665254/govedixilop.pdfIn PDF document text
    • https://s3.amazonaws.com/xupimaral/kekemutara.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_off000059e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x59E8 5292 bytes
SHA-256: 058fb4cdbf27ee321b332f00aef26dbec0dc821d36e8ff9a41869983eb3aae57
font_01_sfnt_off00006bf7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BF7 9788 bytes
SHA-256: 8014c4f7e39d202bcb0067cdf4057caccf7cd6719795baaac90bf2f09e5d4ffa