Malicious PDF — malware analysis report

Static analysis result for SHA-256 48e0c839f494d959…

MALICIOUS

PDF

45.4 KB Created: 2020-11-09 03:59:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 916398b27d2cb217e5255f6196cb246c SHA-1: bd36b9772e1b5c282bab27b044ea0980c263bfa4 SHA-256: 48e0c839f494d959a01f04dbe93e616e180fc366281f9399ef2736be6e4fe398
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://traffmen.ru/123?keyword=apush+chapter+33+video In PDF document text
    • https://fupexorugukemig.weebly.com/uploads/1/3/0/8/130814763/40d4091c38.pdfIn PDF document text
    • https://nigiseza.weebly.com/uploads/1/3/4/4/134462574/1074202.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391001/normal_5f8e2d6e1ab76.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/4aee3d20-78eb-464d-a8e8-d29e895e39e3/fidoba.pdfIn PDF document text
    • https://peragovez.files.wordpress.com/2020/11/96020262926.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/660c7360-46e0-4d4f-9b4f-f6f52ebb3d25/85541023503.pdfIn PDF document text
    • https://sexonilapaxo.files.wordpress.com/2020/11/52620415531.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f33f3218-12f3-4780-bfdf-a638a569bf36/sigobafotonafog.pdfIn PDF document text
    • https://sisiviweze.files.wordpress.com/2020/11/50939477702.pdfIn PDF document text
    • https://sevuropigo.files.wordpress.com/2020/11/convergence_and_divergence_of_a_sequence.pdfIn PDF document text
    • https://vozemuzu.files.wordpress.com/2020/11/88669580324.pdfIn PDF document text
    • https://sebuwisawos.files.wordpress.com/2020/11/fipupojuretis.pdfIn PDF document text
    • https://merozuxexulu.files.wordpress.com/2020/11/xiveli.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0dbd578c-c6f6-43f2-8107-d8644e66aadc/84541602247.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005b73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B73 5340 bytes
SHA-256: f8f7d9c7f70d20c456edeb2fc4a318be4a1c6ffdfc487ac9aae92af4b7615841
font_01_sfnt_off00006d9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D9D 10512 bytes
SHA-256: f1cc39d2611d8680610eadebf2e388aad230aefaddcd7786e4af1f0dd376f700
font_02_sfnt_off00009194.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9194 16204 bytes
SHA-256: 532315dfdc59b350d447ad91845dd8cc72a836e684f536ab9a4305dc5b53fb8e

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