Malicious PDF — malware analysis report

Static analysis result for SHA-256 5eee30aa81250bf2…

MALICIOUS

PDF

46.2 KB Created: 2020-10-02 09:28:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 67a0c548fb7353e5f38aadf7b47ebf61 SHA-1: 3bc4aed5dd551b3558dd7b26dde69df3af9f606e SHA-256: 5eee30aa81250bf2532dce3f0f6acad1ac654d75e4a30489d135b2ea3773a81f
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.link/pify?keyword=monster+slayers+the+heroes+of+hesiod In PDF document text
    • https://site-1036826.mozfiles.com/files/1036826/sisoganuronikijisigorog.pdfIn PDF document text
    • https://site-1037202.mozfiles.com/files/1037202/pinop.pdfIn PDF document text
    • https://site-1036636.mozfiles.com/files/1036636/nizetiv.pdfIn PDF document text
    • http://files.locavore-market.com/uploads/1/3/2/3/132302916/c427eb23.pdfIn PDF document text
    • http://files.mrtoddsclassroom.com/uploads/1/3/1/4/131408256/bupenavivexo.pdfIn PDF document text
    • http://files.brhsband.net/uploads/1/3/1/1/131164439/2884134.pdfIn PDF document text
    • http://files.eontdairydays.com/uploads/1/3/0/9/130969458/vinemiv.pdfIn PDF document text
    • http://files.agelessfitness.us/uploads/1/3/1/4/131409861/bewavabovuz.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/1/0484/8140/3030/files/felaboruxokejawugimiwoku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/3299/6761/files/hero_wars_cheats_kostenlos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/3993/4622/files/synonyms_for_satisfied.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/3749/3928/files/cpm_algebra_2_chapter_7_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/7829/9031/files/lovivomenoguladedorew.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d6903150-3010-4600-885a-32cddc66dbee/3713402999.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0bc43206-1373-44a5-9a0d-636e92343c11/daxeminivoligar.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a63fa37a-0536-419d-8188-ce91cbced7b2/xozobebegizemipogogo.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_off0000773f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x773F 5104 bytes
SHA-256: d10872fecf325dd68f420a7c44eda8467355099590e24adfacfbd844e3a82d8d
font_01_sfnt_off000088a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88A6 10388 bytes
SHA-256: 481e04d42a2a1a71087c1cf30de514b06aca0a4b2b2230f959ad3390ac00fac1