Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ee9e21e9372b5ba…

MALICIOUS

PDF

43.6 KB Created: 2020-11-08 23:40:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 157c21fe8673b3df73135ec0eebadd96 SHA-1: a9bd58ff942c59cc01c28671723bb6665b3f47e8 SHA-256: 6ee9e21e9372b5bad6dc5515397897b67a9d4944f73ccd8c3c5a31943ca18460
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://traffine.ru/aws?keyword=listerine+woven+cinnamon+dental+floss In PDF document text
    • https://sokuvotaboraj.weebly.com/uploads/1/3/0/7/130776263/555469.pdfIn PDF document text
    • https://gokipeko.weebly.com/uploads/1/3/4/3/134351508/3172362.pdfIn PDF document text
    • https://netaxodesu.weebly.com/uploads/1/3/4/3/134367037/55029aac98.pdfIn PDF document text
    • https://femitinekabel.weebly.com/uploads/1/3/1/4/131437683/watebupuwedu.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/d4f14d6d-b039-4df1-9871-0cadd6e8533c/vewaxopamenifof.pdfIn PDF document text
    • https://vuxuwavu.files.wordpress.com/2020/11/92571558564.pdfIn PDF document text
    • https://zomomupekal.files.wordpress.com/2020/11/48634801737.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/218660da-2baf-4876-8d61-2ee5bb8de0c6/61902366090.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3d01dcae-f30d-40dd-94ca-820366b0fe35/7964190525.pdfIn PDF document text
    • https://mepugen.files.wordpress.com/2020/11/laxmikant_polity_notes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b7cc0662-47bf-41d4-9c6e-ded8deefbfca/wuxapesifaxedik.pdfIn PDF document text
    • https://ratawekazuj.files.wordpress.com/2020/11/zetuloku.pdfIn PDF document text
    • https://zidisoxe.files.wordpress.com/2020/11/thesis_acknowledgement_supervisor.pdfIn PDF document text
    • https://pewivawo.files.wordpress.com/2020/11/the_mysterious_benedict_society_and.pdfIn PDF document text
    • https://s3.amazonaws.com/xunilukegez/dental_terminology_for_dummies_manual.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000058de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x58DE 4604 bytes
SHA-256: 50c298d28e99800e2a04e4ba8a326aa7d254f170624f0d6660e57cb1dfcaca19
font_01_sfnt_off00006907.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6907 5260 bytes
SHA-256: 23c44caf9bc63c9106bb673a4c7608a193bb3f9d705ef37f2b4114ae96d4a2f1
font_02_sfnt_off00007af1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AF1 11184 bytes
SHA-256: 4f2b29ce78cf0ab736035dae12cffa42c8ae914e3f6e8354f0b99c8e9786d0ba

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