Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f302717d23317c3…

MALICIOUS

PDF

41.6 KB Created: 2020-10-08 07:57:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 40d6214f06bb2f969ba39e76ea89cd44 SHA-1: 050c23e53277af165424339329f013011d596bda SHA-256: 1f302717d23317c3c447b1825b6318897bced51e5c44251f1ec627151c32f5a1
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://cctraff.ru/strik?keyword=newman+projection+practice+worksheet+with+answers In PDF document text
    • http://files.4thchakra.com/uploads/1/3/1/3/131379116/9653246.pdfIn PDF document text
    • http://files.imptravel.co.uk/uploads/1/3/0/7/130740073/7598250.pdfIn PDF document text
    • http://wibikipo.madelinesteimleart.com/uploads/1/3/0/8/130874413/d2830.pdfIn PDF document text
    • http://files.lindastantonart.com/uploads/1/3/0/8/130814058/78e991148e900.pdfIn PDF document text
    • https://site-1038442.mozfiles.com/files/1038442/rafagijipezidukasowope.pdfIn PDF document text
    • https://site-1042622.mozfiles.com/files/1042622/gupolis.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/b94c8953-b983-44e6-9dd0-f9f839873964/vewutifabunijusowirusa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7ba25d7c-d9f0-4dc1-a284-af20b1628eb2/vivavive.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/86a97dab-d839-47da-9adc-df8d3c70eae7/memovomiruwaladop.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/971ffc06-28ee-4a2e-845d-482e91df6e96/popibesididebafabagiwa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c4f96072-25cb-404e-a0ed-e08472c4a4d7/14445674227.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8696/1045/files/vuxejozosi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5314/6527/files/explain_the_three_state_system_of_france.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/1594/5371/files/93613663971.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0493/5883/1772/files/wiwekigeviwe.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_off000064b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64B3 5344 bytes
SHA-256: 92eeef6335ec40d7b862ddec5c6a82084a821a3a7578d2277d78091633290190
font_01_sfnt_off000076cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76CD 10108 bytes
SHA-256: e8185d8de3ba1ad45c2a013cf7530efae9f45673eda9dc147b4f0acab888643a

Open this report in the interactive analyzer, or submit your own file for analysis.