Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab59b3ae5073d2c5…

MALICIOUS

PDF

39.6 KB Created: 2020-10-03 09:09:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 7f999359d36f7110063b97b206015d2a SHA-1: ed6ecd036860f2cb07bc97d7e97db0953d141167 SHA-256: ab59b3ae5073d2c558003b18299bc9074642c2034a149e139f2b885dc102808a
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.cc/pify?keyword=coleman+comfortsmart+deluxe+cot+near+me In PDF document text
    • http://files.bbluntsheabutter.shop/uploads/1/3/0/9/130969004/8a3b6315117e2ac.pdfIn PDF document text
    • http://kemij.classiccitychef.com/uploads/1/3/1/4/131437069/aee74.pdfIn PDF document text
    • http://fozasul.alexlacquement.com/uploads/1/3/0/7/130775169/1648042.pdfIn PDF document text
    • http://tiganaja.theillustratedopossum.com/uploads/1/3/0/8/130814124/3357561.pdfIn PDF document text
    • http://nowut.cudetrading.com/uploads/1/3/0/7/130775830/wijabuzejiwir_juzijasavixelif_nejasunifiz_kuvajuzobifep.pdfIn PDF document text
    • https://site-1040177.mozfiles.com/files/1040177/zibobozavifetafakaxar.pdfIn PDF document text
    • https://site-1036951.mozfiles.com/files/1036951/74968966741.pdfIn PDF document text
    • https://site-1036812.mozfiles.com/files/1036812/11337935273.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/53fbf63b-676c-4d9e-b6ce-135e81ef9130/lakejaselusolufolujad.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4f097095-045c-42d5-bb2d-cdf10970072e/gaxukusivuruwudutiduramew.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/abd98d34-6050-40a5-ac13-0f2e52c434ac/47219763990.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_off00005dd8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DD8 5140 bytes
SHA-256: 43cea50393cb103b3edab1ab43efc45b97d271f9c1fc2b22fa4eae85ec2d735b
font_01_sfnt_off00006f39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F39 10060 bytes
SHA-256: 71106f0d6114ca9342569f1e638cbfb5775a35c1e081b662c5ce61520706b424