Malicious PDF — malware analysis report

Static analysis result for SHA-256 7dc139d5983d6710…

MALICIOUS

PDF

48.8 KB Created: 2020-10-01 06:56:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: c6b6df4e1d6a0380a14587a89084fbde SHA-1: edba7f5411f7e14815e54c6deb117cf3a5aef613 SHA-256: 7dc139d5983d6710f68f54474161eae1845a383bed4204069cba375a8f6c794e
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://cctraff.ru/strik?keyword=arduino+uno+programming+codes+pdf In PDF document text
    • http://files.trianglewaterpartnership.org/uploads/1/3/2/6/132696263/1902638.pdfIn PDF document text
    • http://files.littleladyo.com/uploads/1/3/0/9/130969004/furopigolijur.pdfIn PDF document text
    • https://site-1040171.mozfiles.com/files/1040171/70697715653.pdfIn PDF document text
    • https://site-1037867.mozfiles.com/files/1037867/25954371115.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/4daa01b5-d305-40f7-b5db-aa6193cd6e5d/mugijumamazekido.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/45d889fa-ca6f-4887-bf05-bde8e8b3d80f/82418442507.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/71ef11c5-d702-4d84-a1cd-ec6145c70879/tesevevorizoluroralo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5a92896b-b813-4d03-b6d9-36afe93005d1/42605565747.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fa81d350-83dc-45d8-a528-153879991a9e/98391287301.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0469/4422/3393/files/kokejodafifisar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5675/1002/files/14208976381.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8155/6375/files/understanding_and_using_english_grammar_5th_edition_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8583/9003/files/tojipa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3644/0733/files/98521339159.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008126.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8126 5432 bytes
SHA-256: 99352cff3d4a8e2dd3f45c073c7802594a5076bd880922f565037be700df97bd
font_01_sfnt_off00009391.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9391 10140 bytes
SHA-256: ce71b371c112d1bb58acc95077add7be9de1adcb7e9713a0b570072d0039eea0

Open this report in the interactive analyzer, or submit your own file for analysis.