Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb0d7250cb2a9218…

MALICIOUS

PDF

43.1 KB Created: 2020-10-12 11:57:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 651fcc6fd10f4684994d4d78bf31339d SHA-1: 58eb8f2e705a3e51af2cf5c3ca4a25d62e5110a6 SHA-256: eb0d7250cb2a9218766cc859d3145680a82305602fae769467fddaa91c8c50a9
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=oxford+dictionary+english+to+english+pdf In PDF document text
    • http://puguv.nwksjrgolf.org/uploads/1/3/1/4/131482833/gusoge.pdfIn PDF document text
    • http://safikotu.lensdefender.com/uploads/1/3/0/9/130969306/7550932.pdfIn PDF document text
    • http://lixag.iobcwa.org/uploads/1/3/1/8/131856293/5031ed2f242.pdfIn PDF document text
    • http://lubadali.caricaturedcvamd.com/uploads/1/3/2/6/132683014/sijetuxixomuf-tikobubifune-werepatuxom.pdfIn PDF document text
    • http://files.kmbowl.net/uploads/1/3/1/3/131383664/7974173.pdfIn PDF document text
    • https://site-1036973.mozfiles.com/files/1036973/56086433120.pdfIn PDF document text
    • https://site-1041372.mozfiles.com/files/1041372/2212672052.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/1/0484/0076/0990/files/belkin_n150_wireless_router_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8067/8553/files/how_to_install_rubbermaid_fasttrack_garage.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/4789/7256/files/xufisepumulufabapitez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6743/1329/files/glencoe_health_crossword_puzzle_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/0385/8077/files/26097744363.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9072/2472/files/bachelor_party_gifts_from_groom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5335/8999/files/vehicle_modification_station_databox_location.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8244/0103/files/1760861405.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/1974/9541/files/79244035346.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
🗂 Part of campaign: lensdefender.com 4 samples

Related samples 2

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_off00006845.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6845 5616 bytes
SHA-256: ceed5f0820bcc511cea928c1bdf5d49eb440e8caa02be8d4aa77aee9ca6346f9
font_01_sfnt_off00007b69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B69 10556 bytes
SHA-256: 0fcc4db793a399589c89326ccad9e13087f02bbb8a7d6b39db5c2bde7dccd374

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