Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3d734e5bb405f71…

MALICIOUS

PDF

43.1 KB Created: 2020-10-11 17:43:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 23ec060ef47d24518f14c24e12c9afd6 SHA-1: 7fb10f38c07d396678f41770f68773639e40e4ef SHA-256: e3d734e5bb405f710d5823cc2507dcf589d9d416822144ccee40bc0a36bea1e0
184 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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.ru/pify?keyword=super+dancer+12th+november+2016+calendar In PDF document text
    • http://legekite.hhot.solutions/uploads/1/3/0/7/130776074/miwukofepar.pdfIn PDF document text
    • http://nebikowa.siblingarts.net/uploads/1/3/1/6/131606624/0a3cee.pdfIn PDF document text
    • http://files.traceymackieartist.com/uploads/1/3/1/0/131071295/werupoxikijok_nenozisoratalew_kujilatezemu.pdfIn PDF document text
    • https://site-1039456.mozfiles.com/files/1039456/lixenateravalasonuraba.pdfIn PDF document text
    • https://site-1037142.mozfiles.com/files/1037142/99794638460.pdfIn PDF document text
    • https://site-1039834.mozfiles.com/files/1039834/98243538995.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/72fe1555-cf39-4d24-9016-a044d88cd4ab/57702900659.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/feef2e3b-2370-4ecd-ae58-65509203b251/9719062535.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f3f8049d-ac0e-462f-976c-df797e15ecec/25339845889.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0493/3628/7391/files/lego_alien_conquest_minifigures.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0060/1504/files/munutufodejamemuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6295/1074/files/95250540827.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_off00006922.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6922 5920 bytes
SHA-256: e6b031912faa37b7a45a3751b572a0f098a955da7d772d9a18e1f5d955ffe0f2
font_01_sfnt_off00007d1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D1B 10132 bytes
SHA-256: 3b5160aada41f40d170449df4d1dbcdd5ad77818985c4cb70070071950a5810f

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