Malicious PDF — malware analysis report

Static analysis result for SHA-256 93e2301cd3d7845c…

MALICIOUS

PDF

47.6 KB Created: 2020-10-06 11:46:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 66903a54b89ff167f5a7a6139d325f0a SHA-1: 7c82231c89f32ca11868dee29ec351f6b00921fd SHA-256: 93e2301cd3d7845c92e2e71ed4409717bc0b3764808bea641dcc554a96e2fece
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://ggtraff.ru/pify?keyword=iowa+american+legion+mid-winter+conference In PDF document text
    • http://files.nc-consulting-enterprises.com/uploads/1/3/0/7/130776164/9d6984b19aacbd4.pdfIn PDF document text
    • http://vojopune.bingilcg.org/uploads/1/3/1/8/131856907/5558879.pdfIn PDF document text
    • http://ganupati.designsbymeghan.net/uploads/1/3/1/6/131606289/c7945afb9af1.pdfIn PDF document text
    • https://site-1036637.mozfiles.com/files/1036637/1196687955.pdfIn PDF document text
    • https://site-1042788.mozfiles.com/files/1042788/morexupepanegof.pdfIn PDF document text
    • https://site-1038583.mozfiles.com/files/1038583/43709767617.pdfIn PDF document text
    • https://site-1039840.mozfiles.com/files/1039840/29920089036.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/118a04a5-e6ab-41f0-a535-06aef747e878/sovil.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/71ccd7dd-e890-41cf-86ff-05129f3a296a/pumiwemifibovatodoko.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/da7b2260-162f-4a55-a005-6fce8811e958/bulijaje.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f4b4f7e2-6b81-4038-90c6-722cc4496287/27057340315.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d21b1553-5775-43f6-89ef-de4c31443f4e/54477755792.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8259/6000/files/84153738390.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2058/2050/files/bill_nye_rocks_and_soil_video.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1628/0475/files/79752384247.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/8954/6401/files/que_es_la_gracia_de_dios.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0492/3778/6780/files/fulokegomibam.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_off000079ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79EA 5224 bytes
SHA-256: a596f987b9c01579f0dc95f80a87397ab8fb88a498486108ae096190d337a150
font_01_sfnt_off00008bb1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BB1 10960 bytes
SHA-256: 4c1282ef99725994d64d1d7f9eb1e2ba86be82aa5b6b1255270121a491265a42

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