Malicious PDF — malware analysis report

Static analysis result for SHA-256 eaa3a1473a2c958a…

MALICIOUS

PDF

40.8 KB Created: 2020-10-06 15:48:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 895ffbb621c3aeac590c6aaf813647bc SHA-1: bd5b528a98be14c75c579874941e4e99288a7350 SHA-256: eaa3a1473a2c958a1f7b9b2c38691fef95ad6caf941f3bf1a27dcfaa6d03b11b
124 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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 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.ru/pify?keyword=join4movies+hollywood+in+hindi+horror In PDF document text
    • https://site-1039846.mozfiles.com/files/1039846/71894066859.pdfIn PDF document text
    • https://site-1037894.mozfiles.com/files/1037894/89062132953.pdfIn PDF document text
    • https://site-1044306.mozfiles.com/files/1044306/11251482878.pdfIn PDF document text
    • https://site-1043121.mozfiles.com/files/1043121/2867956167.pdfIn PDF document text
    • http://files.christkinglaw.com/uploads/1/3/0/7/130775432/pafoluzibotup_ragutamuda_kiruzijefogave.pdfIn PDF document text
    • http://files.whitelotusdesigns.com/uploads/1/3/0/8/130813821/xomare.pdfIn PDF document text
    • http://files.getyourcartoon.com/uploads/1/3/1/0/131070152/tonabegivumujum.pdfIn PDF document text
    • http://files.lianginsects.com/uploads/1/3/0/7/130739379/5532192.pdfIn PDF document text
    • http://files.vancouvervacationrentals.org/uploads/1/3/0/8/130813899/638f014fb10db6.pdfIn PDF document text
    • https://site-1041676.mozfiles.com/files/1041676/77492938229.pdfIn PDF document text
    • https://site-1036754.mozfiles.com/files/1036754/20536871373.pdfIn PDF document text
    • https://site-1040056.mozfiles.com/files/1040056/xevinesurivadoxobokux.pdfIn PDF document text
    • https://site-1039515.mozfiles.com/files/1039515/nolepifasowudujatukuvuxak.pdfIn PDF document text
    • https://site-1039215.mozfiles.com/files/1039215/zetawes.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off000060d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60D1 5188 bytes
SHA-256: c100de5701f2fa94307e13f4b41d76d0388667e0a2b05684edf469dc3dcabd4e
font_01_sfnt_off0000726e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x726E 10536 bytes
SHA-256: e854a793c7378194b17aade8ebcc12b594e88b14c0a7f91c6dfedac1ded42d8b