Malicious PDF — malware analysis report

Static analysis result for SHA-256 61af9b73ada2c476…

MALICIOUS

PDF

46.1 KB Created: 2020-10-15 20:16:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: fccb8c686afd40691e7ce3d03ce7e0bd SHA-1: 757563c8d9d857ed5de667140876378fdb6eec44 SHA-256: 61af9b73ada2c47684307d47266334c8ba3026a32a386ba47b7e37475cde15f5
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.club/pify?keyword=personal+trainer+manual+pdf In PDF document text
    • https://site-1042968.mozfiles.com/files/1042968/dadufonaxidox.pdfIn PDF document text
    • https://site-1036713.mozfiles.com/files/1036713/gufavegosagipifuxoxit.pdfIn PDF document text
    • https://site-1039405.mozfiles.com/files/1039405/zutomexoxogatebusamuli.pdfIn PDF document text
    • https://site-1040354.mozfiles.com/files/1040354/merge_dragons_toys_galore_event_guide.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366003/normal_5f87089141c11.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366044/normal_5f87022f1bbc2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365635/normal_5f87513069684.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366622/normal_5f878c43d7616.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365660/normal_5f8713cd5ba3d.pdfIn PDF document text
    • https://nitiruminaxodax.weebly.com/uploads/1/3/0/7/130738633/3f4d612.pdfIn PDF document text
    • https://dojulukasinu.weebly.com/uploads/1/3/0/7/130776790/jeburagu_xuzupu_bosurub_radomizen.pdfIn PDF document text
    • https://tavumake.weebly.com/uploads/1/3/2/7/132740551/53b6a12ae85492c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366676/normal_5f8753dabc1e3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365621/normal_5f86fa2fe9c1b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368218/normal_5f87cfa6c94ba.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366623/normal_5f8747d05b648.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/0ceca709-73e8-4212-a6e5-49e3c183c8e1/48727569089.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/37777e45-17e7-4d4e-87d8-5e3a3aab1323/41206362248.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/09038002-1d68-4748-b8ed-f526c6ec7b63/13307753386.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ed340c39-1702-4f06-97a4-d378a49ea8f8/nelunixuvowibozom.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/429922fc-4810-496f-b2bc-93c2a05ce8f3/dejix.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_off0000764f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x764F 5188 bytes
SHA-256: dbe770be2709ead5af0d164cfb22f722daf21508c1d9fad6c25102d3c0611150
font_01_sfnt_off000087db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87DB 10544 bytes
SHA-256: d788059937e107b53d7bcb7431c7c866a8f9de9f1b01a753cc38f2c01baeb37c