Malicious PDF — malware analysis report

Static analysis result for SHA-256 00f1ef21fa982074…

MALICIOUS

PDF

43.7 KB Created: 2020-10-03 01:31:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: b7b5c1e3b4469bfed0f386af41320099 SHA-1: ba6d370f7f03dc57f487073895dddfdf152a0223 SHA-256: 00f1ef21fa9820741325e042f9d77d28eb702d4f6aea0a64470eef67e9bf0ab6
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://gettraff.ru/strik?keyword=2007+hyundai+tiburon+repair+manual+p In PDF document text
    • http://xidekiwub.tjremaley.com/uploads/1/3/1/4/131438282/nonim.pdfIn PDF document text
    • http://files.integrityfurnitureco.com/uploads/1/3/2/6/132695730/9636864.pdfIn PDF document text
    • http://files.luvafrenchbulldog.com/uploads/1/3/1/1/131164002/2108784.pdfIn PDF document text
    • https://site-1038699.mozfiles.com/files/1038699/27610276791.pdfIn PDF document text
    • https://site-1039183.mozfiles.com/files/1039183/welokixedofifefekevape.pdfIn PDF document text
    • https://site-1039553.mozfiles.com/files/1039553/11683800528.pdfIn PDF document text
    • https://site-1036743.mozfiles.com/files/1036743/40097281596.pdfIn PDF document text
    • https://site-1037091.mozfiles.com/files/1037091/22771492210.pdfIn PDF document text
    • https://site-1037859.mozfiles.com/files/1037859/78184878004.pdfIn PDF document text
    • https://site-1037091.mozfiles.com/files/1037091/78548817417.pdfIn PDF document text
    • https://site-1039645.mozfiles.com/files/1039645/netavarufalu.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/aeed9a2d-27ba-4c3d-8c96-47f8b3d517a7/39851115980.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ab599b8a-23f9-48db-9b59-7b4952254a62/10079364306.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/85791f9c-0229-443f-84b4-a8b75f4bb490/zisokeserawegomesebur.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/644dc822-347f-44b2-991a-433ff87ae945/logasutexoriku.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_off00006c7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C7D 5520 bytes
SHA-256: 63caca85147f1c38eb0a59da7ce1c355c0afeddcf28713754c0628f908638ec8
font_01_sfnt_off00007f16.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F16 10080 bytes
SHA-256: 439668668dbb93cc6c3a21591b07bd82aa3a94e0b2a14b452437c4db30295e26

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