Malicious PDF — malware analysis report

Static analysis result for SHA-256 f190edcea4dc16d7…

MALICIOUS

PDF

71.2 KB Created: 2020-10-07 07:32:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 7ddfd95d592c0b872b3190577f28ba10 SHA-1: 0cb6faf82cbc84981fa8ea8dabcfb08cd246e4ad SHA-256: f190edcea4dc16d7d834bf86abc70e6e256985c105183fda6ead0467672f9e10
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=navy+evaluation+closing+statements In PDF document text
    • https://site-1039577.mozfiles.com/files/1039577/14175508004.pdfIn PDF document text
    • https://site-1043805.mozfiles.com/files/1043805/masuzol.pdfIn PDF document text
    • https://site-1038702.mozfiles.com/files/1038702/xopubi.pdfIn PDF document text
    • https://site-1040101.mozfiles.com/files/1040101/rivufalaluwawudinezawa.pdfIn PDF document text
    • http://getol.catherinedanielfitness.com/uploads/1/3/0/8/130874388/gexivumodarafagufap.pdfIn PDF document text
    • http://files.jamesballardmusic.com/uploads/1/3/0/8/130873947/webesir-xokexaburuwa-rejudakoxi.pdfIn PDF document text
    • http://files.wrrbc.org/uploads/1/3/0/9/130969539/turilajemadis_maguz.pdfIn PDF document text
    • http://files.principa-book.com/uploads/1/3/2/3/132303219/e884f0869c07.pdfIn PDF document text
    • http://files.vikurkennel.com/uploads/1/3/2/6/132682668/pikexowavimarin-wojakujamogixe.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/9928c33b-9428-4c06-b018-a721854257a9/84886563789.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/166816e0-2401-437b-8635-b4ed6e4480f9/31633128712.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9ff55f6c-077c-48f5-aa20-9e5380972484/77848303199.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2e011001-c5bc-46e3-b65d-8f29ecc32dd2/nifatikelukufubibubevenup.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ae8c7ab0-4923-4bf9-bb77-f39fd77c4e6b/1286310602.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_off0000d960.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD960 5156 bytes
SHA-256: 2de644c9b1dee5463321d67e4090e557f5c11f0f2056db7af0778d1fbb37a2bc
font_01_sfnt_off0000eaf3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAF3 10792 bytes
SHA-256: ea99cd66396c41bb027c7444114b6d8a60982733d63f1548ae1afeb60526a6ac